Which Scenario Illustrates a Typical Career Change of Middle Adulthood

Which scenario illustrates a typical career change of middle adulthood?

A) Polly, a librarian, is looking for a new job as a book editor.
B) Steve, a physical therapist, wants to become an accountant.
C) Mandra, a beautician, is going to school to become a nurse.
D) Durrell has a high stress job on Wall street but wants to pursue sculpting full time.