This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of skin, Subject name: Dental
[{'content': 'Telogen phase of hair cycle lasts for \nSelect and explain. \nA. 3 Days, B. 3 Weeks, C. 3 Months, D. 3 Years', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hair cycles:- anagen - catagen - telogen. 1) Anagen:- Hairgrowth phase, duration of phase determines length of hair, duration 2-6 years on scalp; 85% of hairs in this cycle at any one time. 2) Catagen:- Transitionalphase (regression); bulb regresses and IRS lost, 2-4 week duration on scalp; 2% hairs in this cycle. 3) Telogen:- Resting phase, proximal hair terminal is club-shaped instead of bulb-shaped, duration of cycle approximately 3 months in scalp; 15% of hairs in this cycle; dermal papilla located higher up in dermis during telogen. Ref:- Sima Jain; pg num:-13', 'role': 'assistant'}]