This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Placenta - Types and their complications, Subject name: Gynaecology & Obstetrics
Which of the following is the most common predisposing factor for placenta accreta? 
Select and explain. 
A. Myomectomy, B. Recent curettage, C. Previous cesarean section, D. Placenta pre
D: Placenta pre
Answer: D: Placenta pre 
Explanation: Placenta accreta is the attachment of placenta directly to the myometrium without any intervening decidua basalis Impoant risk factor : * Placenta pre ( most common ) * Prior cesarean section