Yurman Co. sells major household appliance service contracts for cash. The service contracts are for a one-year, two-year, or three-year period. Cash receipts from contracts are credited to unearned service contract revenues. This account had a balance of $960,000 at December 31, 2016 before year-end adjustment. Service contract costs are charged as incurred to the service contract expense account, which had a balance of $240,000 at December 31, 2016. Outstanding service contracts at December 31, 2016 expire as follows: During 2017 During 2018 During 2019 $200,000 $320,000 $140,000 What amount should be reported as unearned service contract revenues in Yurman's December 31, 2016 balance sheet? a. $720,000. b. $660,000. c. $480,000. d. $440,000.