This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
Kidney size increases in pregnancy by 
Select and explain. 
A. 0.5cm, B. 1.5cm, C. 2cm, D. 2.5cm
B: 1.5cm
Answer: B: 1.5cm 
Explanation: Kidney size increases approximately 1.5 cm, returns to normal size in postpaum.(Ref: William's Obstetrics; 25th edition)