Of the Following, Which Represents the Most Likely Reason That

Of the following, which represents the most likely reason that today's institutional employees will leave an agency:

A) Being too bored on the job
B) Transferring to another correctional agency at a higher rank
C) Being unable to adjust to the physical demands of shift work
D) Having too many difficulties in terms of in dealing with the inmates
E) Having problems related to the agency's supervisory or management practices