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: Gynaecology & Obstetrics
Involution of uterus takes -- weeks : 
Select and explain. 
A. 4, B. 6, C. 12, D. 20
B: 6
Answer: B: 6 
Explanation: 6