[The following information applies to the questions displayed below.] The following are transactions for the Sky-Blue Corporation: Collected $3,900 rent for the period October 1 to December 31, which was credited to Deferred Revenue on October 1. Paid $2,400 for a two-year insurance premium on October 1 and debited Prepaid Insurance for that amount. Used a machine purchased on October 1 for $54,000. The company estimates annual depreciation of $5,400. For each of the above transactions for the Sky-Blue Corporation, prepare the adjusting journal entries required on October 31. (If no entry is required for a transaction/event, select "No Journal Entry Required" in the first account field.) - Record the rent revenue earned during October. - Record the insurance expense for October. - Record the depreciation for the month of October.