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
Which drug should not be given in pregnancy ? 
Select and explain. 
A. Labetalol, B. ACE inhibitors, C. Hydralazine, D. Methyl dopa
B: ACE inhibitors
Answer: B: ACE inhibitors 
Explanation: None