Why Is It an Advantage for a Female Elk to Choose

Why is it an advantage for a female elk to choose a male that has a large set of antlers as her mate?

A) A male with a larger set of antlers if more likely to be health and carry good genetics
B) The male can use the antlers to spear food for the female
C) The male is more likely to have already fathered offspring in the past
D) The male is most likely a young bull that will be alive for many years to help raise the offspring
E) The antlers will help nourish the offspring once they are born