Americans Are Intuitively Aware of Class Differences from an Early

Americans are intuitively aware of class differences from an early age. Why would some people consider characterizing them as "un-American"?

A) The American popular culture, excludes class differences from its content.
B) Class differences among the majority of Americans (i.e. the middle class) , whose tastes the popular culture reflects, are too amorphous for such differences to be believable.
C) Americans see their society as being equal.
D) Class structure and patriotism are purely subjective constructs.