Cornerstone Exercise 3-19 (Algorithmic) Deferred Revenue Adjusting Entries Olney Cleaning Company had the following items that require adjustment at year end. a. For one cleaning contract, $11,100 cash was received in advance. The cash was credited to Unearned Service Revenue upon receipt. At year end, $1,990 of the service revenue was still unearned. b. For another cleaning contract, $8,300 cash was received in advance and credited to Unearned Service Revenue upon receipt. At year end, $2,850 of the services had been provided. Required: 1. Prepare the adjusting journal entries needed at December 31. Dec. 31 Dec. 31 (Record earned revenue) (Record earned revenue) 2. What is the balance in Unearned Service Revenue at December 31 related to the two cleaning contracts?