This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
[{'content': 'Drug of choice in nocturnal enuresis is \nSelect and explain. \nA. Imipramine, B. Diazepam, C. Amoxapine, D. Reboxetine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (Imipramine) (449-KDT 6th)Enuresis - In children above 5years, imipramine at bed time is effective, but bed wetting may again start when the drug is stopped* Elderely subjects with bed wetting have also benefittcd* Imipramine is most likely and nortriptyline is least likely to cause orthostatic hypotension (145-LP3rd)', 'role': 'assistant'}]