The Red Wolf Society, a nongovernmental not-for-profit organization, receives numerous contributed hours from volunteers during its busy season. Tom, a clerk at the local government utilitys office, volunteered ten hours per week for 8 weeks transferring wolf food from the port to the wolf shelter. His rate of pay at the utility office is $20 per hour, and the prevailing wage rate for laborers is $15 per hour. What amount of contribution revenue should Red Wolf Society record for this service?

a.0

b.400

c.1200

d.1600