On the Basis of Their DNA,select the Answer That Places

On the basis of their DNA,select the answer that places the following species on the evolutionary tree in order according to their relatedness to their common ancestor.Differences from the common ancestor are underlined.
Common ancestor: ATCGCTATCGA
Species A: ATGGCTTTCGA
Species B: ATGGCTTTCAA
Species C: ATGGCTATCGA

A) 1: Species A,2: Species B,3: Species C
B) 1: Species A,2: Species C,3: Species B
C) 1: Species B,2: Species A,3: Species C
D) 1: Species C,2: Species A,3: Species B
E) 1: Species C,2: Species B,3: Species A