a. Collected $2,400 rent for the period October 1 to December 31. which was credied to Deferred Revenue on October 1 b. Paid $1,200 for a two-year insurance premium on October 1 and debited Prepaid insurance for that amount. c. Used a machine purchased on October 1 for $48,000. The company estimates annual depreciation of $4,800. qulred: Or each of the above transactions for the Sky Blue Corporation, prepare the adjusting journal entries required on October 31 . (If no itry is required for a transaction/event, select "No Journol Entry Required" In the first account field.) Journal entry worksheet Record the insurance expense for octoben