Proco had an account payable of $7,800 due to Shirmoo Inc., one of its suppliers. The amount was due to be paid on January 31. Proco did not have enough cash on hand then to pay the amount due, so Proco's treasurer called Shirmoo's treasurer and agreed to sign a note payable for the amount due. The note was dated February 1, had an interest rate of 6% per annum, and was payable with interest on May 31. Required: a. Use the horizontal model to show the effects (+ for addition and for subtraction) of each of these transactions and adjustments for Proco on the following: a. February 1, to show that the account payable had been changed to a note payable. b. March 31, to accrue interest expense for February and March. C. May 31, to record payment of the note and all of the interest due to Shirmoo. b. Prepare the journal entries to show each of these transactions and adjustments. Required A Required B Prepare the journal entries to show each of these transactions and adjustments. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.)