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': 'Most common recurrence sites or metastatic sites of malignancy following pelvic surgery are all except: \nSelect and explain. \nA. Carcinoma cervix - Lateral pelvic wall and central pelvis, B. Carcinoma ovary - Lung, C. Chorionepithelioma - Suburethral region in anterior vaginal wall, D. Carcinoma body - Vault of vagina', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]