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
Most common form of vaginitis : 
Select and explain. 
A. Senile vaginitis, B. Trichomonas vaginitis, C. Gonococal vaginitis, D. Monilia vaginitis
B: Trichomonas vaginitis
Answer: B: Trichomonas vaginitis 
Explanation: Trichomonas vaginitis