This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Placenta and Chorion Development, Subject name: Gynaecology & Obstetrics
True about circumvallate placenta is? 
Select and explain. 
A. Fetal plate smaller than basal plate, B. Basal plate smaller than fetal plate, C. Has accessory lobes, D. Is membranous
A: Fetal plate smaller than basal plate
Answer: A: Fetal plate smaller than basal plate 
Explanation: Ans. (a) Fetal plate smaller than basal plateRef: William's obs ch-27 p.578