This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pharmacology
Which of the following is NOT a frontline antihypertensive agent? 
Select and explain. 
A. Enalapril, B. Hydrochlorthiazide, C. Amlodipine, D. Atenolol
D: Atenolol
Answer: D: Atenolol 
Explanation: Ans. (D) Atenolol(Ref: CMDT-2014/429)*Beta blockers are no longer considered to be the first line antihypertensive agents. According to JNC-8, ACE inhibitors, calcium channel blockers and diuretics are first line agents.