What May Be the Most Likely Reason for the Existence

Multiple Choice

What may be the most likely reason for the existence of polar bodies?

A) They act as a back-up in case the secondary oocyte becomes non-viable.
B) They may be fertilized and produce a viable twin.
C) They provide a structure for half of the chromosomes after cellular division.
D) They add a hormonal stimulus necessary to trigger ovulation.
E) They are important additional sources of estrogen.