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: Skin
[{'content': 'The time period that elapses between the physic emotional stress and 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: C. i.e. 3 months', 'role': 'assistant'}]