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
Creamy fishy odor is caused by: 
Select and explain. 
A. Trichomonas, B. Gardnerella, C. Candida, D. Chlamydia
B: Gardnerella
Answer: B: Gardnerella 
Explanation: None