Each of the Following Statements Concerning Oogenesis Is True,except That

Each of the following statements concerning oogenesis is true,except that

A) oogenesis begins before birth.
B) ova develop from stem cells called oogonia.
C) an ovum completes its last meiosis after it is fertilized.
D) about half the oogonia complete mitosis between birth and puberty.
E) by the time of their birth,girls have already lost about 80 percent of their oocytes.