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
Skin doubling time is 
Select and explain. 
A. 2 weeks, B. 4 weeks, C. 6 weeks, D. 8 weeks
B: 4 weeks
Answer: B: 4 weeks 
Explanation: Skin doubling time is 3_4 weeks Ref Harrison20th edition pg 1208