Which of the following does not represent a reason why "middle class" is difficult to define?

A) A very large portion of people, with widely varying lifestyles and resources, consider themselves middle class.
B) Being middle class tends to mean more than just economic status.
C) Calling oneself middle class is the norm in the United States.
D) The middle class is a very small and homogeneous group.

Middle Class

The middle class is a socio-economic grouping characterized by moderate income levels, educational attainment, and occupational statuses, often considered the backbone of society.

Economic Status

The position of an entity or individual within a social structure, defined by income, wealth, and occupation, influencing their access to resources and power.

Homogeneous Group

A group whose members have similar backgrounds, interests, or characteristics.