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': 'Cone biopsy is indicated in all the following conditions except: \nSelect and explain. \nA. Indefinite diagnosis on colposcopy, B. CIN-III, C. Cervical metaplasia, D. Microinvasive carcinoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]