General stores inc., a chain of retail stores short-listed four candidates for the two vacant positions of store manager. they were particularly keen on mark evans, who had an excellent background and impressive interpersonal skills. to lure mark in, they offered him an extremely lucrative package that he was unlikely to get anywhere else. they also hired doug pyers for the other vacancy, although mark got a better deal than doug. in spite of this, general stores was unable to retain mark for more than a few months. which of the following, if true, could explain this apparent discrepancy? a. mark is more concerned with the extrinsic aspects of a job than anything else. b. the company did not accurately gauge mark's need for intrinsic rewards. c. average salaries in the industry matched the remuneration doug received. d. doug was unhappy about the inequity in pay that existed between him and his colleague, mark.