Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Calcium and Vitamin D Malnutrition in Elderly Women
Brief Summary: This study is designed to test whether calcium supplementation alone or calcium plus vitamin D reduces the incidence of fractures, reduces high parathyroid secretory activity, and halts bone loss in a population-based sample of women 55+ years of age.

* A calcium supplement of 1400 mg/d will significantly reduce the cumulative incidence of spine and appendicular fractures over four years for independently living, rural women 55 years of age and older compared to similar women on their usual diets.
* A calcium supplement of 1400 mg/d plus 1100 IU vitamin D/d will significantly reduce the cumulative incidence of spine and appendicular fractures compared to a calcium supplement only.


Options:
A: Arm Label: vitamin D3 and calcium carbonate; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3, Dietary Supplement: Calcium carbonate | Arm Label: Placebo for vitamin D3 and calcium carbonate; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Vitamin D3, Dietary Supplement: Calcium carbonate | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D3; Assigned to Arm(s): Placebo for vitamin D3 and calcium carbonate, vitamin D3 and calcium carbonate | Intervention Type: DIETARY_SUPPLEMENT; Name: Calcium carbonate; Assigned to Arm(s): Placebo for vitamin D3 and calcium carbonate, vitamin D3 and calcium carbonate
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: 1; Type: EXPERIMENTAL; Interventions: Dietary Supplement: calcium supplementation | Arm Label: 2; Type: EXPERIMENTAL; Interventions: Dietary Supplement: calcium and vitamin D3 supplementation | Arm Label: 3; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Placebo | Intervention Type: DIETARY_SUPPLEMENT; Name: calcium supplementation; Assigned to Arm(s): 1 | Intervention Type: DIETARY_SUPPLEMENT; Name: calcium and vitamin D3 supplementation; Assigned to Arm(s): 2 | Intervention Type: DIETARY_SUPPLEMENT; Name: Placebo; Assigned to Arm(s): 3
D: Intervention Type: BEHAVIORAL; Name: dietary supplements; Assigned to Arm(s): N/A | Intervention Type: DRUG; Name: vitamin C; Assigned to Arm(s): N/A | Intervention Type: DRUG; Name: vitamin E; Assigned to Arm(s): N/A | Intervention Type: DRUG; Name: beta-carotene; Assigned to Arm(s): N/A | Intervention Type: DRUG; Name: folic acid/Vitamin B6/Vitamin B12; Assigned to Arm(s): N/A

Answer: C