This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Puerperium, Subject name: Gynaecology & Obstetrics
Following delivery, Uterus becomes a pelvic organ after_____ 
Select and explain. 
A. 24 hours, B. First week, C. Second week, D. Third week
C: Second week
Answer: C: Second week 
Explanation: Size of uterus - 1. immediately after delivery- just below the umblicius 2. Uterus become pelvic organ in 10-14 days 3. Uterus comes to normal size in 4-6 weeks