An Individual Found a Species of Giraffe on a Remote

An individual found a species of giraffe on a remote island,where every giraffe had the same neck length.A drought had apparently afflicted the island as the leaves below the level that the giraffes could reach were almost depleted.What would likely happen to the neck length of this species of giraffe over many generations if the environmental conditions continued?

A) Neck length will increase.
B) Neck length will decrease.
C) Neck length will not change.
D) Neck length will not change but leg length will.