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
Entacapone acts by inhibiting which of the following enzyme? 
Select and explain. 
A. COMT, B. MAO-A, C. MAO-B, D. Decarboxylase
A: COMT
Answer: A: COMT 
Explanation: .