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
Which of the following is a Rho kinase inhibitor? 
Select and explain. 
A. Fasudil, B. Ranolazine, C. Amiloride, D. Nicorandil
A: Fasudil
Answer: A: Fasudil 
Explanation: Ans. a. Fasudil