6 pts Question 23 On March 1, Flash Fill Company received $2,400 in advance for 12 months of service to be provided with the service period beginning on March 1. This $2,400 was recorded as Unearned Service Revenue. As of the end of the year, no entry has yet been made to adjust the amount initially recorded. The service is provided evenly throughout the year. Which ONE of the following will be included in the adjusting entry necessary on December 31 O A CREDIT to Service Revenue for $400 A DEBIT to Service Revenue for $2,000 A CREDIT to Uneared Service Revenue for $2,000 O A CREDIT to Unearned Service Revenue for $400 A DEBIT to Unearned Service Revenue for $2,000