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
Anagen phase of the hair indicates- 
Select and explain. 
A. The phase of activity and growth, B. The phase of transition, C. The phase of resting, D. The phase of degeneration
A: The phase of activity and growth
Answer: A: The phase of activity and growth 
Explanation: Anagen phase- active growth phase-70-80% of hairs will be in anagen phase.last for 2-10years Catagen phase- regression phase- lasts for 1-3 weeks Telogen phase- resting phase- lasts for 3months Reference Harrison20th edition pg 1230