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: Unknown
[{'content': 'The time period that elapses between the physical emotional stress arid the hair loss is about - \nSelect and explain. \nA. 21 days, B. 30 days, C. 3 months, D. 6 months', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans-C', 'role': 'assistant'}]