This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pituitary-Hypothalmic System and Thyroid, Subject name: Pharmacology
Drug of choice for hypehyroidism during 2nd trimester of pregnancy is: 
Select and explain. 
A. Propylthiouracil, B. Carbimazole, C. Sodium iodide, D. Radioactive iodine
B: Carbimazole
Answer: B: Carbimazole 
Explanation: HYPEHYROIDISM IN PREGNANCY DOC for hypehyroidism in pregnancy is Propylthiouracil. DOC for hypehyroidism in first trimester of pregnancy is Propylthiouracil. DOC for hypehyroidism in 2nd and 3rd trimester of pregnancy is Carbimazole.