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': 'PFOR inhibitor used in angina \nSelect and explain. \nA. Nifedipine, B. Trimetazidine, C. Atenolol, D. Fasudil', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Trimetazidine, ranolazine is paial fatty acid oxidation inhibitors used in angina as they prevent free radicle formation and decrease myocardial oxygen demand. Ref: HL Sharma 3rd ed.', 'role': 'assistant'}]