Two Perceptions Promote That Social Classes Exist as Distinct Groups

Two perceptions promote that social classes exist as distinct groups.are promoted regarding the answer to this question.They include the idea that

A) classes exist,but are invisible due to the "melting pot" theory.
B) classes are real and exist in a state of conflict with one another.
C) American society is essentially classless,a situation in which class divisions are blurred by their continuous nature.
D) classes are real and exist in a state of conflict with one another and American society is essentially classless,a situation in which class divisions are blurred by their continuous nature are correct.