After Being Referred by a Friend, Hasina Attended a Job

After being referred by a friend, Hasina attended a job interview.She didn't feel it went well but was surprised when her friend told her the boss didn't like that she had worn her hijab, a traditional headscarf.The boss told a coworker after the interview, "Our customers prefer working with Christians." This is an example of

A) affirmative action.
B) quid pro quo.
C) discrimination.
D) hostile work environment.
E) favoritism.