One Basic Rule of Behavior Among Indian Castes Is That

One basic rule of behavior among Indian castes is that:

A) Members of different castes do not eat together.
B) Members of lower castes must always prepare food for members of higher castes.
C) While castes are rigidly separated during religious ritual,at other times members of different castes mingle freely with each other.
D) Members of one caste must always marry members of another.
E) Children are always members of their father's caste,not their mother's caste.