What did Darwin conclude about the finches on the Galapagos Islands that later supported his theory of evolution? Check all that apply.

(A) The finches on the Galapagos Islands all had the same beak.
(B) The finches on the Galapagos Islands had different beaks.
(C)The beaks of the finches stayed the same over time.
(D)The beaks of the finches changed over time.
(E)The Galapagos finches had a common ancestor.
(F)The Galapagos finches did not have a common ancestor.