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
[{'content': 'The following drug acts as Rho- kinase(ROCK enzyme) inhibitor \nSelect and explain. \nA. Trimetazidine, B. Fasudil, C. Pinacidil, D. Ranolazine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Fasudil is the Rho kinase inhibitor. Rock enzyme produce vasoconstriction and increase oxygen demand which is blocked by fasudil decreasing the myocardial oxygen demand', 'role': 'assistant'}]