Simplex Games, a not-for-profit entity organized to provide athletic competition opportunities for high school students, utilizes a number of volunteers in carrying out its mission. At the 2018 Games 50 volunteers provided a total of 1000 hours of service performing tasks such as picking up litter and delivering water to the athletes. A local CPA firm donates its services to prepare the annual tax return and other federal and state required paperwork which must be filed to maintain its status as a tax-exempt organization. During 2018 the CPA firm provided 60 hours of service. If purchased, the CPA services would have cost $60 per hour and the game workers would have cost $6 per hour. How much contributed service revenue should Simplex Games recognize in 2018?

A. $6,000. B. $3,600. C. $3,000. D. $0.