When We Say, "There Is a Family Resemblance Among All

When we say, "There is a family resemblance among all the members of the Martinez family," we mean that

A) there is at least one feature shared by all the members of the family.
B) there is at least one identifying trait such that if you have that trait, you are certain to be a member of the family.
C) any pair of family members will have certain traits in common even though there may be no traits shared by all of the family members.
D) there are several features that all members of the family have in common.