The bookkeeper for Carla Vista Co asks you to prepare the following accrual adjusting entries at December 31. (If no entry is required, select "No Entry for the account tities and enter o for the amounts. Credit account titles are automatically indented when the amount is entered. Do not indent manually.) (a) Interest on notes payable of $280 is accrued. Services performed but unbilled totals $1,920. (c) Salaries of $700 earned by employees have not been recorded. No. Date Account Titles and Explanation (a) Dec 31 Det Credit (6) Dec. 31 (c) Dec 31