Read the Statement Below, and Then Answer the Following Question(s)

Multiple Choice

Read the statement below, and then answer the following question(s) .
A small population of deer is introduced to an island. All the males have 11 to 13 points on their antlers.
-If after several generations 30 percent of the males have antlers with 9 to 11 points,40 percent have antlers with 15 to 17 points,and 20 percent have antlers with 12 to 14 points,this development will have been the result of:

A) directional selection.
B) disruptive selection.
C) founder effect.
D) stabilizing selection.