Richard (plaintiff) tested positive for AIDS. He applied for a job at Gray Company (defendant), but ...

Richard (plaintiff) tested positive for AIDS. He applied for a job at Gray Company (defendant), but was refused a job by the company due to his illness. He filed a lawsuit against the company by alleging violation of ADA. In this scenario, there is a strong possibility that the defendant may refuse to hire or accommodate an individual if:
 A) the individual has any type of sexually transmitted illness.
 B) that individual's condition poses a direct threat to the health of other workers.
 C) the individual has tested positive for AIDS or any such communicable disease.
 D) it can be established that Richard's illness would cause discomfort among the other employees.