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: Unknown
a G3P2L2 with previous 2 LSCS comes to OPD with placenta near os which is a greater risk for this patient 
Select and explain. 
A. abruption, B. vasa praevia, C. adherent placenta, D. preterm birth
C: adherent placenta
Answer: C: adherent placenta 
Explanation: The presence of placenta praevia and previous 2 lscs greatly increase the risk of adherent placenta. The other risk factors for adherent placenta are
history of uterine surgery like myomectomy
D&C
endometrial ablation
history of pelvic irradiation
age more than 35
infertility
hysteroscopic removal of adhesions