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: Social & Preventive Medicine
Best method of contraception in a commercial sex worker - 
Select and explain. 
A. IUCD, B. OCP, C. Permanent sterilization, D. Barrier methods
D: Barrier methods
Answer: D: Barrier methods 
Explanation: None