Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Physicians' Health Study II: Trial of Vitamins in the Chemoprevention of Cancer, CVD, and Eye Disease
Brief Summary: The use of vitamin E, vitamin C, beta carotene, and/or multivitamins may keep cancer, cardiovascular disease, eye diseases, or cognitive decline from occurring. This randomized clinical trial studied vitamin E, vitamin C, beta carotene, and/or multivitamins to see how well they work compared with placebos in preventing cancer, cardiovascular disease, eye disease, and cognitive decline in male doctors aged 50 years and older.


Options:
A: Arm Label: Vitamin E + selenium placebo; Type: EXPERIMENTAL; Interventions: Drug: Vitamin E, Other: selenium placebo | Arm Label: Selenium + vitamin E placebo; Type: EXPERIMENTAL; Interventions: Drug: Selenium, Other: Vitamin E placebo | Arm Label: Vitamin E + selenium; Type: EXPERIMENTAL; Interventions: Drug: Vitamin E, Drug: Selenium | Arm Label: Vitamin E placebo + selenium placebo; Type: PLACEBO_COMPARATOR; Interventions: Other: Vitamin E placebo, Other: selenium placebo | Intervention Type: DRUG; Name: Vitamin E; Assigned to Arm(s): Vitamin E + selenium, Vitamin E + selenium placebo | Intervention Type: DRUG; Name: Selenium; Assigned to Arm(s): Selenium + vitamin E placebo, Vitamin E + selenium | Intervention Type: OTHER; Name: Vitamin E placebo; Assigned to Arm(s): Selenium + vitamin E placebo, Vitamin E placebo + selenium placebo | Intervention Type: OTHER; Name: selenium placebo; Assigned to Arm(s): Vitamin E + selenium placebo, Vitamin E placebo + selenium placebo
B: Arm Label: Control; Type: NO_INTERVENTION; Interventions: N/A | Arm Label: Prostate Screening; Type: ACTIVE_COMPARATOR; Interventions: Other: Laboratory Biomarker Analysis, Procedure: Medical Examination Assessment, Other: Screening Questionnaire Administration | Intervention Type: OTHER; Name: Laboratory Biomarker Analysis; Assigned to Arm(s): Prostate Screening | Intervention Type: PROCEDURE; Name: Medical Examination Assessment; Assigned to Arm(s): Prostate Screening | Intervention Type: OTHER; Name: Screening Questionnaire Administration; Assigned to Arm(s): Prostate Screening
C: Arm Label: Vitamin E; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin E | Arm Label: Vitamin C; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin C | Arm Label: Multivitamin; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Multivitamin | Arm Label: Beta-carotene; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Beta-carotene | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin E; Assigned to Arm(s): Vitamin E | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin C; Assigned to Arm(s): Vitamin C | Intervention Type: DIETARY_SUPPLEMENT; Name: Multivitamin; Assigned to Arm(s): Multivitamin | Intervention Type: DIETARY_SUPPLEMENT; Name: Beta-carotene; Assigned to Arm(s): Beta-carotene
D: Intervention Type: DRUG; Name: hormone replacement therapy; Assigned to Arm(s): N/A | Intervention Type: DRUG; Name: estrogens; Assigned to Arm(s): N/A | Intervention Type: DRUG; Name: progestins; Assigned to Arm(s): N/A | Intervention Type: DRUG; Name: estrogen replacement therapy; Assigned to Arm(s): N/A | Intervention Type: BEHAVIORAL; Name: diet, fat-restricted; Assigned to Arm(s): N/A | Intervention Type: DRUG; Name: calcium; Assigned to Arm(s): N/A | Intervention Type: DRUG; Name: vitamin D; Assigned to Arm(s): N/A | Intervention Type: BEHAVIORAL; Name: dietary supplements; Assigned to Arm(s): N/A

Answer: C