This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infections of the genital tract, Subject name: Gynaecology & Obstetrics
[{'content': 'Definitive criteria for PID is \nSelect and explain. \nA. Tubo-Ovarian abscess on USG, B. Cervical erosion, C. Temparature > 37.5 degrees, D. Infeility', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Chronic pelvic inflammatory disease manifest as Hydrosalpinx Chronic pyosalpinx Tubo ovarian abscess or cyst Tubercular tubovarian masses Ref: Shaw Gynecology 17 e pg 340.', 'role': 'assistant'}]