The 4 cellular layers separating maternal and fetal blood in sequence are( )
A.
spiral artery wall, Nichbaur layer, cytotrophoblast and Hofbaur layer v
B.
syncitiotrophoblast, cytotrophoblast, villi connective tissue and fetal capillary endothelium
C.
maternal lacuna, trophoblast layer, endothelial and fetal red blood cell
D.
fetal capillary endothelium, villi connective tissue, cytotrophoblast and syncitiotrophoblast
E.
spiral artery wall, syncitiotrophoblast, cytotrophoblast and Hofbaur layer