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
Nabothian cysts are 
Select and explain. 
A. Remnant of Wolffian duct in females, B. Mucus retention cysts of cervix, C. Infected gartners duct cyst, D. Due to HPV infection of cervix
B: Mucus retention cysts of cervix
Answer: B: Mucus retention cysts of cervix 
Explanation: Nobothian cysts are retention cysts of endocervical columnar cells occurring where a cleft has been covered by squamous metaplasia.