The request itself comes after the supporting details have illustrated the request's merit and motivates the reader's action. Which of the following best states the request?

a.Being green means making sacrifices. Forming a carpool or vanpool is one way you can do good for our planet and help slow the destruction of the environment.
b.Everyone needs to do his or her share to make our planet safe. It's the right thing to do. Furthermore, ridesharing is encouraged by the government.
c.HealthyFoods would like to encourage you to form carpools or vanpools. As an incentive, you will receive free preferred parking once you register your ridesharing with the HR office, a savings of $600 a year.