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: Social & Preventive Medicine
The daily requirement of Vitamin D in infants and children is 
Select and explain. 
A. 2.5 mcg (100 IU), B. 10.0 mcg (400 IU), C. 5.0 mcg (200 IU), D. 20.0 mcg (800 IU)
C: 5.0 mcg (200 IU)
Answer: C: 5.0 mcg (200 IU) 
Explanation: None