Artificial selection to obtain cows yielding higher milk output represents

Options

A. Stabilizing selection as it stabilizes this character in the population.
B. Directional selection as it pushes the mean of character in one direction.
C. Disruptive selection as it splits population into two: one yielding higher output and other yeidling lower output
D. Stablizing selection followed by distruptive selection as it stabilizes the population to produce higher yielding cows

Answer

B