Other Things Equal, Which of the Following Would Not Tend

Other things equal, which of the following would not tend to earn more?

A) Someone in a riskier or more unpleasant job, rather than a safer or more pleasant job.
B) Someone who places a lower value on leisure, rather than a higher value.
C) Someone in a job that requires a graduate degree rather than an undergraduate degree.
D) Someone who works longer hours, rather than shorter hours.
E) All of the above would tend to earn more.