Problem 3-1A Preparing adjusting entries (monthly-prepaid expenses L04 Willow Window Washing Services prepares adjustments monthly and shows the following selected accounts on its December 31, 2020, unadjusted trial balance: Account Debit Credit Prepaid insurance Prepaid office rent Prepaid subscriptions Prepaid equipment rental $ 3.720 23.000 1,300 26.320 Required Prepare the required monthly adjusting entries at December 31, 2020, based on the following additional information: a. The remaining balance in Prepaid Insurance was for a six-month insurance policy purchased for 87,440 and in effect on September 1, 2020. b. $5,200 of the balance in Prepaid Office Rent had not been used as at December 31, 2020 c$1,140 of the balance in Prepaid Subscriptions had been used as at December 31, 2020. d. The company paid $33,840 on April 1, 2020, to rent equipment for a three-year period beginning April 1. 2020