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: Dental
This phase in hair cycle determines the length to which hair in different body areas can grow – 
Select and explain. 
A. Anagen, B. Catagen, C. Telogen, D. Kenogen
A: Anagen
Answer: A: Anagen 
Explanation: None