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 organism causing Acute Salpingitis: \nSelect and explain. \nA. Mycoplasma, B. Chlamydia, C. Gonococal, D. Treponema', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Gonococal', 'role': 'assistant'}]