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': 'Painless, heavy, recurrent bleeding of sudden onset is seen in: March 2005 \nSelect and explain. \nA. Cervical carcinoma, B. Circumvallate placenta, C. Placenta prae, D. Abruptio placentae', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Placenta Prae Bleeding in abruption placentae is painful and continuous Bleeding in circumvallate placenta is slight.', 'role': 'assistant'}]