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
Exogenous adrenaline is metabolized by: 
Select and explain. 
A. AChE, B. COMT, C. Decarboxylase, D. Acetyl transferase
B: COMT
Answer: B: COMT 
Explanation: Endogenous adrenaline action is terminated mainly by reuptake whereas exogenous agent is metabolized by COMT and MAO.