Which of the Following Is a Difference Between Surface-Level Diversity

Which of the following is a difference between surface-level diversity and deep-level diversity?

A) Surface-level diversity can only be perceived by a few, whereas deep-level diversity can be perceived by almost everyone.
B) Surface-level diversity consists of differences that are typically changeable, whereas deep-level diversity consists of differences that are typically unchangeable.
C) Knowledge of deep-level diversity gives way to the better understanding of surface-level diversity, whereas surface-level diversity is not helpful in understanding deep-level diversity.
D) Surface-level diversity is immediately observable, whereas deep-level diversity usually reveals itself at a later stage.