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': 'Post paum hemorrhage is present when blood loss exceeds : \nSelect and explain. \nA. 200 c.c., B. 400 c.c., C. 500 c.c., D. 700 c.c.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 500 c.c.', 'role': 'assistant'}]