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
Best contraceptive for a 20 year nulliparous woman is - 
Select and explain. 
A. IUCD, B. Pills, C. Condoms, D. Foam tablets
B: Pills
Answer: B: Pills 
Explanation: Pills