Historically african elephants have had large ivory tusks for many years poachers have been killing elephants that large tusks so they can sell the ivory which is valuable now many african elephants have small tusks or do not develop tusks at all which of the follow is true

a. the trait of tusk size in elephants has changed over time.

b. elephants without tusk are more likely to be hunted then elephant with large tusk.

c. poaching has had no effect on the size of elephants tusks.

d. elephants without tusks cannot reproduce.