For each of the following 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.) a. Collected exist4, 650 rent for the period October 1 to December 31, which was credited to Unearned Revenue on October 1. b. Paid exist3,000 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 exist57,000. The company estimates annual depreciation of exist5, 700