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
Beta-adrenoceptor blocking agent that should be avoided in patients with renal failure is ? 
Select and explain. 
A. Atenolol, B. Metoprolol, C. Propranolol, D. Esmolol
A: Atenolol
Answer: A: Atenolol 
Explanation: Ans. is 'a' i.e., Atenolol