Required information IThe following infarmation apples to the questions displayed bolow] Fraud Investigaters incorporated operates a fraud detection service. a. On March 31, 10 customess were billed for detection services totaling $33,000. b. On Octeber 31 , a customer balance of $1,900 trom a prior year was determined to be uncollectble and was written off c. On December 15, a customer pald an old balance of $820, which had been written off in a prior yoar. d. On December 31, $580 of bad debts were estinoted and recorded for the yeat. Required: 1. Prepare journal entries for each transaction above. (if no entry is required for a transaction/event, select "No Journal Entry Aequired in the first account field.) Journal entry worksheet