Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase 3, Multicenter, Randomized, Double-Blind, Placebo-Controlled Study to Investigate the Efficacy and Safety of Sofosbuvir/GS-5816 Fixed Dose Combination for 12 Weeks in Subjects With Chronic HCV
Brief Summary: The primary objectives of this study are to evaluate the efficacy, safety, and tolerability of sofosbuvir/velpatasvir (SOF/VEL) fixed dose combination (FDC) for 12 weeks in adults with chronic genotype 1, 2, 4, 5, or 6 hepatitis C virus (HCV) infection.


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:

* Willing and able to provide written informed consent
* HCV RNA ≥ 10\^4 IU/mL at screening
* HCV genotype 1, 2, 4, 5, 6, or indeterminate assessed at screening by the central laboratory
* Chronic HCV infection (≥ 6 months) documented by prior medical history or liver biopsy
* Classification as treatment naive or treatment experienced
* Males and females of childbearing potential who engage in heterosexual intercourse must agree to use protocol specified method(s) of contraception

Exclusion Criteria:

* Current or prior history of clinically-significant illness (other than HCV) or any other major medical disorder that may interfere with treatment, assessment, or compliance with the protocol; individuals currently under evaluation for a potentially clinically-significant illness (other than HCV) are also excluded.
* Screening ECG with clinically significant abnormalities
* Laboratory results outside of acceptable ranges at Screening
* Prior exposure to SOF or other nucleotide analogue HCV NS5B inhibitor or any HCV NS5A inhibitor
* Infection with hepatitis B virus (HBV) or human immunodeficiency virus (HIV)
C: Inclusion Criteria:

* Patient must have chronic hepatitis C infection (genotype 1) with HCV RNA level \>= 1000 IU/mL
* Patient must have failed at least 1 prior course of Peg-IFN/RBV therapy (standard treatment)
* Patient must be willing to use 2 effective methods of birth control for up to 7 months after last dose of study medication

Exclusion Criteria:

* Patient is a previous non-responder that is classified as a viral breakthrough case
* Patient is infected with Hepatitis C virus, genotype 1, exhibiting more than one subtype
* Patient has Hepatitis C virus, genotype 1, and exhibits co-infection with any other genotype
* Evidence of decompensated liver disease
* Patient has condition that requires use of systemic corticosteroids
D: Inclusion Criteria:

* Body Mass Index (BMI) of 18 to ≤ 37 kg/m\^2
* Clinical diagnosis of chronic HCV infection defined by positive serology for HCV for at least 6 months and detectable HCV RNA in peripheral blood ≥105 IU/mL at screening
* Participant must be infected with HCV GT1a, GT1b, or GT 3

Exclusion Criteria:

* Co-infection with GT1 and GT3
* Estimated creatinine clearance of ≤70 mL/min based on the Cockcroft-Gault equation
* History of stroke, chronic seizures, or major neurological disorder
* History of clinically significant endocrine, gastrointestinal (excepting HCV infection), cardiovascular, hematological, immunological, renal, respiratory, or genitourinary abnormalities or diseases
* History of neoplastic disease
* Positive Hepatitis B surface antigen at the pre-study (screening) visit
* Has had major surgery, donated or lost 1 unit of blood (approximately 500 mL) or participated in another investigational study within 4 weeks prior to the prestudy (screening) visit.
* Previous treatments (s) with nonstructural protein 5A (NS5A) inhibitors
* \<4 weeks since administration of any experimental protease inhibitor
* Previous exposure to interferon-alpha and/or ribavirin within 3 month prior to the first dose of elbasvir in the study
* Clinical or laboratory evidence of advanced or decompensated liver disease

Answer: B