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': 'A patient requires mild cholinomimetic stimulation following surgery. Physostigmine and bethanechol in small doses have significantly different effects on which of the following ? \nSelect and explain. \nA. Gastric secretion, B. Neuromuscular junction, C. Sweat glands, D. Ureteral tone', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]