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: Dental
[{'content': 'Whiff test is done for: \nSelect and explain. \nA. Vaginal candidiasis, B. Trichomoniasis, C. Bacterial vaginosis, D. Syphilis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Whiff test is done to diagnose\xa0Bacterial vaginosis, where "Fishy amine odor" is seen after adding KOH to the discharge sample.', 'role': 'assistant'}]