This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
[{'content': 'Which One of the following is not a cause of secondary Postpaum Haemorrhage? \nSelect and explain. \nA. Placenta pre, B. Retained bits of placenta, C. Endometritis, D. Polyp', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Causes of secondary Postpaum Haemorrhage are: * Retained bits of placenta * Postpaum infection * Infection of Cervical and Vaginal Tears * Puerperal Inversion of Uterus * Uterine Polyp or Fibroid: * Undiagnosed carcinoma of cervix * Chorion-epithelioma REF : DUTTA BOOK OF OBSTETRICS', 'role': 'assistant'}]