What is the definition of placental?
A)a mammal which gives birth to a fetus that moves into a pouch for protection and nourishment
B)the gland of a mammal that produces milk for the young
C)having a placenta, the organ that nourishes young until birth
D)a tube that connects an unborn baby to its mother for nourishment
E)a mammal that has just one passage for elimination and egg laying