This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'A patient of endogenous depression was administered imipramine. After how much time interval the therapeutic effect of Imipramine is likely to manifest? \nSelect and explain. \nA. 3 days, B. 1 week, C. 3 weeks, D. 3 months', 'role': 'user'}, {'content': 'Answer: C \nExplanation: .', 'role': 'assistant'}]