The Terms Endogamy and Homogamy Differ in That

The terms endogamy and homogamy differ in that

A) Endogamy is mate selection from within a recognized group, homogamy is selection from those with similar social characteristics.
B) Endogamy is most likely to be used by sociologists; homogamy is used by anthropologists.
C) Endogamy is selection from outside the group; homogamy is selection from within the group.
D) Both (a) and (b) above.
E) Both (b) and (c) above.