With Respect to Culture and Consumer Behavior

With respect to culture and consumer behavior,

A) culture is the whole set of beliefs, attitudes, and ways of doing things of a reasonably homogeneous set of people.
B) culture may exert many subtle influences on other aspects of consumer behavior.
C) different cultural subgroups are likely to require different marketing mixes.
D) all of the above are correct.
E) none of the above is correct.