A group of high school seniors perform volunteer services for patients at a nearby assisted-living facility, a private not-for-profit entity. The assisted-living facility would not otherwise provide these services such as wheeling patients in the park or calling games of bingo. At a minimum-wage rate, these students would be paid $21,320, but the actual value is estimated to be $27,400. In the assisted-living facility’s statement of activities, what amount should be reported as contribution revenue?

a. $27,400

b. $21,320

c. $6,080

d. $-0-