This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
Placenta pre true are: 
Select and explain. 
A. incidence increases by two fold after LSCS, B. More common in primipara, C. Most common in developed countries, D. 1 per 1000 pregnancies
A: incidence increases by two fold after LSCS
Answer: A: incidence increases by two fold after LSCS 
Explanation: Prior surgery on the uterus especially Caesarean section increases the incidence of placenta prae two or three fold.The combination of a prior Caesarean section with an anterior placenta prae is paicularly dangerous (refer pgno:129 sheila textbook of obstetrics 2nd edition)