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
A patient presented to you with vaginal discharge. Whiff test was positive. What is the diagnosis? 
Select and explain. 
A. Bacterial vaginosis, B. Candidal vaginitis, C. Gonococcal infection, D. Chlamydial infection
A: Bacterial vaginosis
Answer: A: Bacterial vaginosis 
Explanation: Whiff positive - Bacterial vaginosis Gram staining - Diplococcus - Gonococci Gram staining - No organism - Chlamydial infection KOH mount - Yeast cells - Candida vaginitis Ref: Essentials of Gynaecology by Lakshmi Seshadri, Edition 1, page - 176.