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: Gynaecology & Obstetrics
Which of the following findings are highly predictive of placenta accreta 
Select and explain. 
A. Large intraplacental lakes; fundal placenta., B. Less than 1mm between uterine serosa - bladder interface and retroplacental vessels ; lateral placenta., C. Less than 1 mm between uterine serosa - bladder interface and retroplacental vessels ; large placental lakes., D. None of the above.
C: Less than 1 mm between uterine serosa - bladder interface and retroplacental vessels ; large placental lakes.
Answer: C: Less than 1 mm between uterine serosa - bladder interface and retroplacental vessels ; large placental lakes. 
Explanation: If distance between uterine serosa-bladder wall interface and retroplacental vessels is <1mm and if there are large intraplacental lacunae → placenta accreta is likely.