Early in the accounting period, Ed Shea paid $9,000 for services in advance of receiving them; Cash was debited and Unearned Service Fees was credited for $9,000. At the end of the accounting period, two-thirds of the services paid for had yet to be performed. The proper adjusting entry is: Select one: A. Unearned Service Fees 3,000 Service Fees Earned 3,000 B. Service Fees Earned 3,000 Unearned Service Fees 3,000 C. Service Fees Earned 6,000 Unearned Service Fees 6,000 D. Unearned Service Fees 6,000 Service Fees Earned 6,000