This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Medical Illness Complicating Pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'A 10 cm ovarian cyst is detected incidentally in an 8 week pregnant woman; management: \nSelect and explain. \nA. Immediate removal by laparotomy, B. CT to rule out malignancy and secondaries, C. Second trimester surgery, D. Remove at time of cesarean section', 'role': 'user'}, {'content': 'Answer: C \nExplanation: For ovarian cysts >=10 cm, because of the substanial risk of malignancy, torsion, or labor obstruction, surgical removal is reasonable option. Surgery is preferably done in the second trimester.', 'role': 'assistant'}]