Vasquez Refers to Whites as Having a "Symbolic Ethnicity

Vasquez refers to whites as having a "symbolic ethnicity." What does she mean by this?

A) Whites are free to practice any elements of their ethnicity without detriment or negative consequence.
B) Whites today have so little clue about their ethnic backgrounds that they can choose whichever symbol the like to represent themselves (or no symbol at all) .
C) Whites use symbols, such as crosses or stars, to show their ethnic backgrounds.
D) Because of white privilege, whites are actually less able to express their ethnic backgrounds than people of color because they may be laughed at.