A firm offer its workers a defined benefits pension as a retirement benefit. Suppose the typical worker will receive a payment of $2500 at the end of each month after he or she retires. The worker's expected lifespan after retirement is 20 years . If this worker is 30 years away from his/her expected retirement date, how much would need to be contributed at the end of each month while he/she is working, to fund the pension?

A) First assume the rate of return on pension investments averages 9%.

B) Now suppose the rate of return on pension investments was 4.8%

C) How does your results relate to the "pension crisis" that is often in the news recently.