If Climate Change Leads to a Warmer,drier Climate in the Galapagos

If climate change leads to a warmer,drier climate in the Galapagos Islands,what would happen to the medium ground finches that eat smaller seeds?

A) The frequency of the allele for larger beaks will become more common
B) The frequency of the allele for smaller beaks will become more common
C) There will be no change in the frequency of the allele for larger beaks
D) Adult finches will grow larger beaks to eat the seeds
E) Adult finches will shrink their beaks to eat the seeds