Which one is wrong.

Options

A. Amnion is the outer layer containing amniotic fluid that acts as a shock absord=ber for soft embryo
B. Amnion and chorion develop as upward projecting folds of somatopleure called amniotic folds
C. Yolk sac is a foetal membrane that helps in nourishment of embryo in general
D. Chorio-allantoic membrane develops villi and contributes much to the development of placenta.

Answer

B