In a Human Female,what Happens to the Collection of Oocytes

In a human female,what happens to the collection of oocytes in the ovaries once puberty begins?

A) The oocytes all mature into eggs as soon as puberty is reached.
B) Ovulation stimulates all of the oocytes to complete meiosis II.
C) One oocyte per month matures and completes meiosis I.
D) One oocyte per month matures and completes meiosis I and meiosis II.
E) All ooctyes are expelled from the ovaries to complete meiosis II.