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
b blocker with peripheral vasodilator action is ? 
Select and explain. 
A. Carvedilol, B. Propranolol, C. Atenolol, D. Acebutalol
A: Carvedilol
Answer: A: Carvedilol 
Explanation: Ans. is 'a' i.e., Carvedilol o Carvedilol is a (31 + 132 + ai adrenoceptor blocker with a : 13 blocking propey of 1 : 9. o It produces peripheral vasodilation due to a-1 blockade as well as calcium channel blockade (direct effect).