This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
The following drug acts as Rho- kinase(ROCK enzyme) inhibitor 
Select and explain. 
A. Trimetazidine, B. Fasudil, C. Pinacidil, D. Ranolazine
B: Fasudil
Answer: B: Fasudil 
Explanation: Fasudil is the Rho kinase inhibitor. Rock enzyme produce vasoconstriction and increase oxygen demand which is blocked by fasudil decreasing the myocardial oxygen demand