Ben Has Been Working as a Process Executive at an Accounting

Ben has been working as a process executive at an accounting firm for the past two years. A hard worker, his work is of good quality and he often puts in extra hours at the office to ensure his schedules are on track. Noticing his efforts, the management offers him a 20 percent hike. Two months later, Ben submits his resignation and soon joins a startup organization, at a senior position. Which of the following best explains this situation?

A) Ben, though highly skilled, lacked ambition.
B) Ben felt the hike was unwarranted.
C) Ben was gunning for a position at the competing firm all along.
D) Ben was motivated by the prospect of extrinsic rewards.
E) Ben found his work to be routine and monotonous.