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
Placenta in which vessels seperate before reaching margin is? 
Select and explain. 
A. Battledoor placenta, B. Velamentous placenta, C. Circumvallate placenta, D. Placenta marginata
B: Velamentous placenta
Answer: B: Velamentous placenta 
Explanation: Velamentous placenta REF: Dutta 6th ed p. 219 The branching vessels traverse a ceain distance in the membrane before they separate to supply it is seen in velamentous placenta Battledoor placenta: the cord is attached to the margin.