Complete Abolition of Discrimination Based on Race and Ethnicity in Jobs

Complete abolition of discrimination based on race and ethnicity in jobs has not been possible because ________.

A) it is difficult to prove that a person was denied a job based on racial grounds rather than educational qualifications
B) laws that prevent discrimination based on race and ethnicity have not been implemented in all states in the United States
C) people prefer the existence of this discrimination so that a sense of competition prevails
D) people do not have a clear understanding of racial discrimination and its various forms