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
[{'content': 'Therapeutic use of acetylcholine is not possible because it is - \nSelect and explain. \nA. Highly protein bound, B. Rapidly degraded, C. Repidly excreted, D. Orally ineffective', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Rapidly degraded o Acetylcholine is not used clinically because : I. It is metabolized very quickly by cholinesterase in plasma and is not effective even by i.v. route. 2. Action is nonselective", 'role': 'assistant'}]