This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2019, Subject name: Medicine
Which of the following is a K- channel opener? 
Select and explain. 
A. Ranolazine, B. Nicorandil, C. Verapamil, D. Lignocaine
B: Nicorandil
Answer: B: Nicorandil 
Explanation: Option B: used in the management of chronic stable Angina. Option A: used to reduce the O2 consumption of the hea