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: Arm 1; Type: EXPERIMENTAL; Interventions: Drug: dl-alpha-tocopherol | Arm Label: Arm 2; Type: EXPERIMENTAL; Interventions: Drug: Memantine | Arm Label: Arm 3; Type: EXPERIMENTAL; Interventions: Drug: dl-alpha-tocopherol, Drug: Memantine | Arm Label: Arm 4; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo | Intervention Type: DRUG; Name: dl-alpha-tocopherol; Assigned to Arm(s): Arm 1 | Intervention Type: DRUG; Name: Memantine; Assigned to Arm(s): Arm 2 | Intervention Type: DRUG; Name: dl-alpha-tocopherol; Assigned to Arm(s): Arm 3 | Intervention Type: DRUG; Name: Memantine; Assigned to Arm(s): Arm 3 | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): Arm 4
B: 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
C: Arm Label: Nutriceutical formulation; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Nutriceutical formulation | Arm Label: Placebo 1; Type: PLACEBO_COMPARATOR; Interventions: Other: Placebo | Arm Label: Placebo 2; Type: PLACEBO_COMPARATOR; Interventions: Other: Placebo | Intervention Type: DIETARY_SUPPLEMENT; Name: Nutriceutical formulation; Assigned to Arm(s): Nutriceutical formulation | Intervention Type: OTHER; Name: Placebo; Assigned to Arm(s): Placebo 1, Placebo 2
D: Arm Label: Ginkgo Synergy® and Choline; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Ginkgo Synergy® and Choline | Arm Label: OPC Synergy® and Catalyn; Type: EXPERIMENTAL; Interventions: Dietary Supplement: OPC Synergy® and Catalyn | Arm Label: Placebo; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Placebo | Intervention Type: DIETARY_SUPPLEMENT; Name: Ginkgo Synergy® and Choline; Assigned to Arm(s): Ginkgo Synergy® and Choline | Intervention Type: DIETARY_SUPPLEMENT; Name: OPC Synergy® and Catalyn; Assigned to Arm(s): OPC Synergy® and Catalyn | Intervention Type: DIETARY_SUPPLEMENT; Name: Placebo; Assigned to Arm(s): Placebo

Answer: B