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
Trichomoniasis is 
Select and explain. 
A. Viral sexually transmitted disease., B. Marker of high-risk sexual behaviour., C. No evidence of vertical transmission., D. Incidence decreases with patient age.
B: Marker of high-risk sexual behaviour.
Answer: B: Marker of high-risk sexual behaviour. 
Explanation: Trichomoniasis is non viral sexually transmitted disease. Vertical transmission during birth is possible. It's incidence increases with patient age.