This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and health, Subject name: Social & Preventive Medicine
RDA of calcium in normal adult male is? 
Select and explain. 
A. 600 mg, B. 400 mg, C. 1200 mg, D. 100 mg
A: 600 mg
Answer: A: 600 mg 
Explanation: RDA of calcium in normal adult male is 600mg/dl.REF.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE.Editon-21.Page no.-588 table no.29