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
Which of the following is most commonly implicated in causing genital was? 
Select and explain. 
A. HPV 16, B. HPV 6, C. HPV 18, D. HPV 28
B: HPV 6
Answer: B: HPV 6 
Explanation: HPV types 6 and 11 cause nearly all genital was. Ref: Williams Gynaecology 1 st edition page 619.