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
[{'content': 'Which of the following is a Rho kinase inhibitor? \nSelect and explain. \nA. Fasudil, B. Ranolazine, C. Amiloride, D. Nicorandil', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Fasudil', 'role': 'assistant'}]