Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase III Randomized Clinical Trial to Study the Efficacy and Safety of the Combination Regimen of MK-5172/MK-8742 in Treatment-Naïve Subjects With Chronic HCV GT1, GT4, and GT6 Infection.
Brief Summary: This was an efficacy and safety study of grazoprevir (MK-5172) in combination with elbasvir (MK-8742) in treatment-naive participants with chronic hepatitis C virus (HCV) genotype (GT) 1, 4, or 6 infection. Participants were randomly assigned (3:1 ratio) to immediate treatment or deferred treatment (placebo control). The primary efficacy hypothesis was that the proportion of participants receiving combination therapy in the Immediate Treatment Arm who achieve sustained viral response at 12 weeks after the end of study treatment (SVR12) is superior to 73%.


Options:
A: Inclusion Criteria:

* Females must be post-menopausal for at least 2 years or surgically sterile or practicing specific forms of birth control
* Chronic hepatitis C, genotype 1-infection and HCV RNA level greater than 10,000 IU/mL at screening
* Subject has never received antiviral treatment for hepatitis C infection
* No evidence of liver cirrhosis

Exclusion Criteria:

* Positive screen for drugs or alcohol
* Significant sensitivity to any drug
* Use of contraindicated medications within 2 weeks of dosing
* Certain predefined abnormal laboratory tests
* Positive hepatitis B surface antigen or anti-human immunodeficiency virus antibody
B: Inclusion Criteria:

* Males and females with Chronic Hepatitis C (HCV) Genotype 1,4,5,6, or indeterminate
* Naive to previous HCV treatment

Exclusion Criteria:

* Positive for HBsAg, anti-HBc IgM Ab, or anti-HIV Ab
* History of any other clinically significant chronic liver disease
C: Inclusion criteria:

1a. For treatment-naïve patients: no prior therapy with interferon, peginterferon, or ribavirin for acute or chronic hepatitis C infection

1b. For treatment-experienced patients: confirmed virological failure during or after combination treatment with an approved dose of alfa-2a or alfa-2b peginterferon combined with ribavirin; such patients must have received at least 12 weeks of therapy with a 90 day washout period prior to screening and must have documentation of medical history prior to enrolment in 1220.2 2. Age 18 years or older 3. Signed informed consent form prior to trial participation 4. Male or female with documented hysterectomy or menopausal female with last menstrual period at least 6 months prior to screening 5. Chronic hepatitis C infection of genotype 1, diagnosed by positive HCV serology test (HCV Ab positive) or detectable HCV RNA at least 6 months prior to screening 6. HCV viral load \>= 100,000 IU/mL at screening 7. TSH and T4 within normal limits or adequately controlled thyroid function 8. Histological evidence within 36 months prior to study enrolment of any degree of chronic necroinflammatory activity or the presence of fibrosis (Ishak Grade 1-4 or Metavir Grade 1-3)

Exclusion criteria:

1. Patients who have been previously treated with at least one dose of any protease inhibitor for acute or chronic hepatitis C infection
2. Evidence of liver disease due to causes other than chronic HCV infection
3. Positive ELISA for HIV-1 or HIV-2
4. Hepatitis B virus (HBV) infection based on presence of Hbs Ag or HBV DNA
5. Any previous liver biopsy consistent with cirrhosis
6. Decompensated liver diseases as evidenced by ascites, portal hypertension, jaundice or hepatic encephalopathy
7. Haemophilia
8. Hemoglobinopathy (e.g., thalassemia major or sickle cell anemia)
9. Severe pre-existing psychiatric disease
10. Poorly controlled diabetes mellitus
11. Ischaemic heart disease
12. Chronic obstructive airway disease
13. Autoimmune disease; including autoimmune hepatitis
14. History of alcohol abuse within the past 12 months
15. Hyperbilirubinemia (conjugated bilirubin) \>1.5x ULN
16. Alkaline phosphatase \>1.5x ULN
17. ALT and AST levels \>= 5 x ULN
18. Hemoglobin \< 12.0 g/dL for women and \< 13.0 g/dL for men
19. White blood cell count \< 2000 cells/mm3
20. Absolute Neutrophil Count \< 1500 cells/mm3
21. Platelet count \< 100,000 cells/mm3
22. Prothrombin time INR (Institutional Normalized Ratio) prolonged to \> 1.5 x ULN
23. Usage of any investigational drug within 30 days prior to enrolment; or the planned usage of an investigational drug during the course of the current study
24. Known hypersensitivity to study drugs
D: Inclusion criteria:

* Documented chronic HCV GT1, GT4, or GT6 with no evidence of non-typeable or mixed genotype infection (positive for anti-HCV antibody, HCV RNA, or any of the listed GTs at least 6 months prior to screening must be confirmed by screening lab results)
* Cirrhosis defined by: liver biopsy showing cirrhosis METAVIR F4; or Fibroscan showing cirrhosis with a result of \>12.5 kiloPascals (kPa); or FibroSure® (Fibrotest®) score of \>0.75 and an aspartate aminotransferase (AST): platelet ratio index (APRI) of \>2
* Absence of cirrhosis defined by: liver biopsy showing absence of cirrhosis, or Fibroscan with a result of ≤12.5 kPa, or Fibrosure® (Fibrotest®) score of \<= 0.48 and APRI of \<=1
* HCV treatment status of treatment naïve (naïve to all anti-HCV treatment) and can also be ineligible to take pegylated interferon
* Female participant not of reproductive potential, or female of reproductive potential and agrees to avoid becoming pregnant while receiving study drug and for 14 days after the last dose of study drug (using abstinence or acceptable methods of contraception)

Exclusion criteria:

* Evidence of decompensated liver disease manifested by the presence of or history of ascites, esophageal or gastric variceal bleeding, hepatic encephalopathy or other signs or symptoms of advanced liver disease. For cirrhotics, participants who are Child-Pugh Class B or C or who have a Pugh-Turcotte (CPT) score \>6
* Co-infection with hepatitis B virus or human immunodeficiency virus (HIV)
* History of malignancy \<=5 years prior to signing informed consent except for adequately treated basal cell or squamous cell skin cancer or in situ cervical cancer or carcinoma in situ; or is under evaluation for other active or suspected malignancy
* Evidence of hepatocellular carcinoma (HCC) or under evaluation for HCC
* Currently participating or has participated in a study with an investigational compound within 30 days of signing informed consent and is not willing to refrain from participating in another such study during the course of this study
* Clinically-relevant drug or alcohol abuse within 12 months of screening
* Pregnant, breast-feeding, or expecting to conceive or donate eggs from Day 1 throughout treatment and 14 days after the last dose of study medication or longer if dictated by local regulations
* Organ transplant (including hematopoietic stem cell transplants) other than cornea and hair
* Poor venous access
* History of gastric surgery (e.g., stapling, bypass) or history of malabsorption disorder (e.g., celiac sprue disease)
* Any medical condition requiring, or likely to require, chronic systemic administration of corticosteroids, TNF antagonists, or other immunosuppressant drugs during the course of the trial
* Evidence of history of chronic hepatitis not caused by HCV, including but not limited to nonalcoholic steatohepatitis (NASH), drug-induced hepatitis, and autoimmune hepatitis

Answer: D