Which of the Following Statements Is True Regarding Pension Plan

Which of the following statements is true regarding pension plan vesting?

A) Vesting provisions apply to employee contributions,
B) The most common form of vesting provision contains a graded vesting schedule whereby the percentage of vesting rises with each year of employee participation,
C) The most common form of vesting provision involves an employee becoming fully vested after five years,
D) Before becoming vested, employees who terminate their employment will forfeit their pension rights to the extent that they have not been funded by the employer.