James Callaghan Has Worked Full-Time for BC Metals for Four

Multiple Choice

James Callaghan has worked full-time for BC Metals for four years. He has learned from the HR manager that his earned pension benefits cannot be revoked by the employer. Why is this so?

A) because the employer expects him to work until retirement
B) because the benefits are vested
C) because the union would strike if they are revoked
D) because the benefits are defined