Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: N/A
Brief Summary: To address cardiovascular disease, cancer, and osteoporosis, the most common causes of death, disability, and impaired quality of life in postmenopausal women. The three major components of the WHI are: a randomized controlled clinical trial of hormone replacement therapy (HRT), dietary modification (DM), and calcium/vitamin D supplementation (CaD); an observational study (OS); and a community prevention study (CPS). On October 1, 1997, administration of the WHI was transferred to the NHLBI where it is conducted as a consortium effort led by the NHLBI in cooperation with the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), the National Cancer Institute (NCI), and the National Institute on Aging (NIA).


Options:
A: Arm Label: Full Factorial Placebo; Type: EXPERIMENTAL; Interventions: Drug: placebo | Arm Label: Full Factorial Calcium; Type: EXPERIMENTAL; Interventions: Drug: Calcium Carbonate | Arm Label: Full Factorial Vitamin D; Type: EXPERIMENTAL; Interventions: Drug: Vitamin D3 | Arm Label: Full Factorial Calcium Plus Vitamin D; Type: EXPERIMENTAL; Interventions: Drug: Calcium Carbonate, Drug: Vitamin D3 | Arm Label: Two Arm Placebo; Type: EXPERIMENTAL; Interventions: Drug: Calcium Carbonate | Arm Label: Two Arm Vitamin D; Type: EXPERIMENTAL; Interventions: Drug: Calcium Carbonate, Drug: Vitamin D3 | Intervention Type: DRUG; Name: Calcium Carbonate; Assigned to Arm(s): Full Factorial Calcium, Full Factorial Calcium Plus Vitamin D, Two Arm Placebo, Two Arm Vitamin D | Intervention Type: DRUG; Name: Vitamin D3; Assigned to Arm(s): Full Factorial Calcium Plus Vitamin D, Full Factorial Vitamin D, Two Arm Vitamin D | Intervention Type: DRUG; Name: placebo; Assigned to Arm(s): Full Factorial Placebo
B: 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
C: Arm Label: cholecalciferol; Type: EXPERIMENTAL; Interventions: Dietary Supplement: cholecalciferol | Arm Label: Ergocalciferol; Type: EXPERIMENTAL; Interventions: Dietary Supplement: ergocalciferol | Arm Label: Placebo; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Placebo | Intervention Type: DIETARY_SUPPLEMENT; Name: cholecalciferol; Assigned to Arm(s): cholecalciferol | Intervention Type: DIETARY_SUPPLEMENT; Name: ergocalciferol; Assigned to Arm(s): Ergocalciferol | Intervention Type: DIETARY_SUPPLEMENT; Name: Placebo; Assigned to Arm(s): Placebo
D: Arm Label: vitamin D2; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: vitamin D2 | Arm Label: vitamin D3; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: vitamin D3 | Intervention Type: DIETARY_SUPPLEMENT; Name: vitamin D2; Assigned to Arm(s): vitamin D2 | Intervention Type: DIETARY_SUPPLEMENT; Name: vitamin D3; Assigned to Arm(s): vitamin D3

Answer: B