A Retiree's Future Benefit from an Employer-Sponsored Defined-Contribution Plan Is

A retiree's future benefit from an employer-sponsored defined-contribution plan is usually based on

A) a formula taking into account number of years of service and average earnings.
B) a formula taking into account number of years of service and final earnings.
C) how much is contributed each year and the rate of return on invested assets for many years into the future.
D) how much is contributed each year and the number of years of service.