This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexually Transmitted Disease in the Female, Subject name: Gynaecology & Obstetrics
Foul smelling fishy odour is seen on: 
Select and explain. 
A. Trichomonas, B. Gardnerella, C. Chlamydia, D. Candidiasis
B: Gardnerella
Answer: B: Gardnerella 
Explanation: Ans. is b, i.e. GardnerellaGardnerella is one of the organism responsible for bacterial vaginosis hence to the correct answer here