Michael Had a Severe Hearing Impairment and Worked as the Supervisor

Michael had a severe hearing impairment and worked as the supervisor of a fast food restaurant. Michael's manager and the human resources manager repeatedly mocked him in front of other employees and said things like "read my lips," "have you got your ears on?" even when he seemed to have no trouble hearing. Michael finally resigned as a result of the mocking and harassment. This is a situation of

A) discrimination.
B) constructive discharge.
C) a failure to value a potentially valuable worker.
D) All of the above.
E) A and C only above.