This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'Entacapone acts by inhibiting which of the following enzyme? \nSelect and explain. \nA. COMT, B. MAO-A, C. MAO-B, D. Decarboxylase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: .', 'role': 'assistant'}]