This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': 'Acetylcholine is not used commercially because: \nSelect and explain. \nA. Long duration of action, B. Costly, C. rapidly destroyed in the body, D. Crosses blood brain barrier', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref:KD Tripathi pharmacology 7th edition (page.no: 99) ACh is hydrolyzed by the enzyme cholinesterase and choline is recycled. A specific (Acetylcholinesterase-AChE or true cholinesterase) and a nonspecific (Butyrylcholinesterase-BuChE or pseudocholinesterase) type of enzyme occur in the body. So Ach is rapidly destroyed in the body', 'role': 'assistant'}]