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
[{'content': 'Commonest genital infection in females is : \nSelect and explain. \nA. Candidiasis, B. Trichomoniasis, C. Syphilis, D. Gonorrhea', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Trichomoniasis', 'role': 'assistant'}]