He met all the conditions of the selection process but was rejected for empioymin by the company on the advice of the medical doctor who performed the mandatory medical examination.

In order NOT to be accused of discrimination, what should the employer have established prior to conducting medical exams on bus drivers?

that the absence of arthritis was a bona fide occupational requirement for private bus drivers

that the medical examination was consistent and reliable as a screening and selection tool

that physical ability was a bona fide occupational requirement for a private bus driver

that the medical examination was well established and valid as a screening and selection tool