Please select the eligibility criteria that correspond to the clinical trial below.
Title: Vitamin D and Omega-3 Trial (VITAL)
Brief Summary: The VITamin D and OmegA-3 TriaL (VITAL) is a randomized clinical trial in 25,871 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids (Omacor® fish oil, 1 gram) reduces the risk of developing cancer, heart disease, and stroke in people who do not have a prior history of these illnesses. The 5-year intervention phase (study pill-taking, median 5.3 years) has ended; post-intervention observational follow-up of study participants is ongoing.


Options:
A: To be eligible for the study, respondents had to, at study entry,:

1. be men aged 50 or older or women aged 55 or older;
2. have no history of cancer (except non-melanoma skin cancer), heart attack, stroke, transient ischemic attack, angina pectoris, coronary-artery bypass grafting, or percutaneous coronary intervention;
3. have none of the following safety exclusions: history of renal failure or dialysis, hypercalcemia, hypo- or hyperparathyroidism, severe liver disease (cirrhosis), or sarcoidosis or other granulomatous diseases such as active chronic tuberculosis or granulomatosis with polyangiitis (Wegener's);
4. have no allergy to fish or soy;
5. have no other serious illness that would preclude participation;
6. be consuming no more than 800 IU of vitamin D from all supplemental sources combined (individual vitamin D supplements, calcium+vitamin D supplements, medications with vitamin D \[e.g., Fosamax Plus D\], and multivitamins), or, if taking, willing to decrease or forego such use during the trial;
7. be consuming no more than 1200 mg/d of calcium from all supplemental sources combined, or, if taking, willing to decrease or forego such use during the trial;
8. not be taking fish oil supplements, or, if taking, willing to forego their use during the trial
B: Inclusion Criteria:

* Patients who have had at least 2 previous episodes of atrial fibrillation and an implanted pacemaker.

Exclusion Criteria:

* Patients with chronic atrial fibrillation
C: Inclusion criteria:

1. Steatohepatitis diagnosed on normal clinical grounds including in most cases liver biopsy and assessed by Kleiner scoring system to assess severity, with no known aetiological factors for underlying liver disease (e.g. exclusion of hepatitis A, B \& C, primary biliary cirrhosis, autoimmune hepatitis, haemochromatosis).
2. Steatosis diagnosed by ultrasound, CT or magnetic resonance imaging who also have either diabetes and/or features of the metabolic syndrome, without evidence of known aetiological factors for underlying liver disease (e.g. exclusion of hepatitis A, B \& C, primary biliary cirrhosis, autoimmune hepatitis, haemochromatosis).

Liver biopsy or liver scan will be within 3 years of recruitment to the study. Age: men \& women \>18 years. Alcohol consumption \<35 units / week for women \<50 units / week for men).

Exclusion criteria:

* Decompensated acute or chronic liver disease, or harmful drinking (\> 35 u/week in women \> 50 u /week in men).
D: Inclusion Criteria:

* Multiple risk factors:

  * diabetes,
  * age =\> 65 years,
  * male sex,
  * hypertension,
  * hypercholesterolemia,
  * smoking,
  * obesity,
  * family history of premature cardiovascular disease;
* Previous manifestations of atherosclerotic disease (ischemic stoke, transient ischemic attack \[TIA\], peripheral artery disease, previous arterial revascularisation procedures, angina pectoris)

Exclusion Criteria:

* Contraindications (known allergies to n-3 PUFA) or indications (previous myocardial infarction) for the treatment with n-3 PUFA
* Serious comorbidity with an unfavourable prognosis over the short term
* Expected non compliance over a long period of time
* Pregnancy

Answer: A