This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
The recommended dietary allowance of Calcium for pregnant females is: 
Select and explain. 
A. 1000, B. 1200, C. 1500, D. 1300
A: 1000
Answer: A: 1000 
Explanation: None