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: Microbiology
[{'content': 'Green frothy vaginal discharge is produced by - \nSelect and explain. \nA. Herpes simplex, B. Candida albicans, C. Trichomonas vaginalis, D. Normal vaginal flora', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]