Which of the Following Is True About Human Eggs at the Moment

Which of the following is true about human eggs at the moment of sperm penetration?

A) They use flagellar propulsion to move from the ovary to the oviduct.
B) They are still located within the ovary.
C) They are covered by a thin layer of calcium carbonate that prevents desiccation.
D) They are still surrounded by follicular cells.