With explanation please

The following information relates to the Muscat Company at the end of 2019, the accounting period is the calendar year. On July 1, 2019, cash of OMR 48,000 was received from customers for a 36 month service period beginning on that date. The receipt was recorded by a debit to cash and a credit to Uneared Service Revenue. It financial statements are to be prepared on December 31, the company should make the following adjusting entry Select one 48.000 Uneared Service Revenue 40,000 b. None of the answers are correct O Cast 48.000 Service Revenue 48.000 neard Service Revenue Service Revente 2000 1.000 KOOD Service 1000