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': 'In a suspected of ovarian cancer, imaging work-up is required for? \nSelect and explain. \nA. Characterization of the lesion, B. Staging, C. Assess resectability, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The roles of diagnostic imaging have been to characterize the ovarian mass, determine the extent of preoperative disease and predict tumor resectability. Ref: National Guidelines (U.S.) (Staging and follow up of ovarian cancer).', 'role': 'assistant'}]