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: Medicine
Iodine requirement in pregnancy and lactation is 
Select and explain. 
A. 90 mcg, B. 120 mcg, C. 150 mcg, D. 250 mcg
D: 250 mcg
Answer: D: 250 mcg 
Explanation: Pre school Children - 90 mcg.
School Children ( 6-12 years ) - 120 mcg.
Adults ( > 12 years ) - 150 mcg.
Pregnancy and lactation - 250 mcg.