Refer to the Figure Showing the Human Female Reproductive System

Refer to the figure showing the human female reproductive system. Based on the figure, which statement is true?

A) The structure at point 1 is covered by a diaphragm, placed immediately below it, as a form of birth control.
B) The structure at point 8 is tied off during female sterilization.
C) Progesterone receptors in the structure at point 4 are blocked by Mifepristone (RU-486) .
D) Spermicidal jelly is applied to the structure at point 4.
E) The cycle of the structure at point 3 is stopped by combination estrogen and progesterone birth control pills.