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
Which One of the following is not a cause of secondary Postpaum Haemorrhage? 
Select and explain. 
A. Placenta pre, B. Retained bits of placenta, C. Endometritis, D. Polyp
A: Placenta pre
Answer: A: Placenta pre 
Explanation: 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