Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: CSP #546 - A Randomized, Clinical Trial of Vitamin E and Memantine in Alzheimer's Disease (TEAM-AD)
Brief Summary: The purpose of this study is to determine whether alpha-tocopherol, memantine (Namenda), or the combination will significantly delay clinical progression in mild to moderately demented patients with Alzheimer's disease compared to placebo.


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: 1; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Study Arm A | Arm Label: 2; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: Study Arm B | Arm Label: 3; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: Study Arm C | Arm Label: 4; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: Study Arm D | Intervention Type: DIETARY_SUPPLEMENT; Name: Study Arm A; Assigned to Arm(s): 1 | Intervention Type: DIETARY_SUPPLEMENT; Name: Study Arm B; Assigned to Arm(s): 2 | Intervention Type: DIETARY_SUPPLEMENT; Name: Study Arm C; Assigned to Arm(s): 3 | Intervention Type: DIETARY_SUPPLEMENT; Name: Study Arm D; Assigned to Arm(s): 4
C: 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
D: 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

Answer: C