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
Drug contraindicated in bilateral renal artery stenosis is: 
Select and explain. 
A. Propranolol, B. Guanethidine, C. Captopril, D. Amlodipine
C: Captopril
Answer: C: Captopril 
Explanation: None