Which of the Following Character States Would Be MOST Helpful

Multiple Choice

Which of the following character states would be MOST helpful in identifying sister groups?

A) character states that occur only within a single species
B) character states that occur in all descendants of a distant common ancestor
C) homologies that are only found in some, but not all, the members of a single group
D) analogies found in organisms belonging to different groups, and which do not share a common ancestor