The Distinction Between "Folkways" and "Mores" Rests Upon the Fact

The distinction between "folkways" and "mores" rests upon the fact that:

A) folkways are always part of popular culture; mores are not
B) the violation of mores generally provokes a severe social reaction; the violation of folkways does not
C) folkways are associated with a specific subculture; mores are not
D) mores have a sociobiological basis; folkways do not
E) folkways have a sociobiological basis; mores do not