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': 'A 25 - years old married infeile woman having regular menstruation, fever, lower abdominal pain and dysmenorrhoea present herself at the OPD. On examination, there are bilateral soft tender masses of 3cm diameter in both fornices and uterus is of normal size. The most likely diagnosis is : \nSelect and explain. \nA. Cystic ovaries, B. Tubo - ovarian masses, C. Ectopic pregnancy, D. Tuberculous salpingitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Tubo - ovarian masses', 'role': 'assistant'}]