Make the adjusting journal entry necessary at the end of the period in the following situation: On February 1, the company received $4,800 in advance for 12 months of service to be provided, with the service period beginning on February 1. This $4,800 was recorded as Unearned Service Revenue. The service is provided evenly throughout the year. As of the end of the year, no entry has yet been made to adjust the amount initially recorded.