Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: A Randomized Double-Blind Placebo-Controlled Trial Of The Effects Of Docosahexaenoic Acid (DHA) In Slowing The Progression Of Alzheimer's Disease
Brief Summary: The purpose of this study is to determine whether chronic DHA (Docosahexaenoic Acid) supplementation slows the progression of cognitive and functional decline in mild to moderate Alzheimer's disease (AD).


Options:
A: Arm Label: 1; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: Lutein/ Zeaxanthin + Omega-3-FA | Arm Label: 2; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: Lutein/ Zeaxanthin + Omega-3-FA | Arm Label: 3; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Placebo | Intervention Type: DIETARY_SUPPLEMENT; Name: Lutein/ Zeaxanthin + Omega-3-FA; Assigned to Arm(s): 1 | Intervention Type: DIETARY_SUPPLEMENT; Name: Lutein/ Zeaxanthin + Omega-3-FA; Assigned to Arm(s): 2 | Intervention Type: DIETARY_SUPPLEMENT; Name: Placebo; Assigned to Arm(s): 3
B: Arm Label: 1.; Type: EXPERIMENTAL; Interventions: Drug: DHA (Docosahexaenoic Acid) | Arm Label: 2.; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo | Intervention Type: DRUG; Name: DHA (Docosahexaenoic Acid); Assigned to Arm(s): 1. | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): 2.
C: Arm Label: Placebo; Type: PLACEBO_COMPARATOR; Interventions: Other: Placebo | Arm Label: Multi-nutrient supplement; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Multi-nutrient supplement | Arm Label: Placebo + Behavioral Activation; Type: EXPERIMENTAL; Interventions: Behavioral: Behavioral Activation, Other: Placebo | Arm Label: Multi-nutrient + Behavioral Activation; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Multi-nutrient supplement, Behavioral: Behavioral Activation | Intervention Type: DIETARY_SUPPLEMENT; Name: Multi-nutrient supplement; Assigned to Arm(s): Multi-nutrient + Behavioral Activation, Multi-nutrient supplement | Intervention Type: BEHAVIORAL; Name: Behavioral Activation; Assigned to Arm(s): Multi-nutrient + Behavioral Activation, Placebo + Behavioral Activation | Intervention Type: OTHER; Name: Placebo; Assigned to Arm(s): Placebo, Placebo + Behavioral Activation
D: Arm Label: Vitamin D + fish oil; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: vitamin D3, Drug: omega-3 fatty acids (fish oil) | Arm Label: Vitamin D + fish oil placebo; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: vitamin D3, Dietary Supplement: Fish oil placebo | Arm Label: Vitamin D placebo + fish oil; Type: ACTIVE_COMPARATOR; Interventions: Drug: omega-3 fatty acids (fish oil), Dietary Supplement: Vitamin D3 placebo | Arm Label: Vitamin D placebo + fish oil placebo; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Vitamin D3 placebo, Dietary Supplement: Fish oil placebo | Intervention Type: DIETARY_SUPPLEMENT; Name: vitamin D3; Assigned to Arm(s): Vitamin D + fish oil, Vitamin D + fish oil placebo | Intervention Type: DRUG; Name: omega-3 fatty acids (fish oil); Assigned to Arm(s): Vitamin D + fish oil, Vitamin D placebo + fish oil | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D3 placebo; Assigned to Arm(s): Vitamin D placebo + fish oil, Vitamin D placebo + fish oil placebo | Intervention Type: DIETARY_SUPPLEMENT; Name: Fish oil placebo; Assigned to Arm(s): Vitamin D + fish oil placebo, Vitamin D placebo + fish oil placebo

Answer: B