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: Pharmacology
Antihypeensive which can not be given in pregnancy ? 
Select and explain. 
A. Labetolol, B. Propranolol, C. Esmolol, D. Hydralazine
B: Propranolol
Answer: B: Propranolol 
Explanation: Ans. is 'b' i.e., Propranolol