Exerclse 13-9A (Algo) Comprehenslve analysls LO 13-2, 13-3 The December 31 , Year 4, balance sheet for Glbson Corporation is presented here. These are the only accounts on Gibson's balance sheet. Amounts indicated by question marks 8 ?) can be calculated using the following additonal information: kequired a. Compute the balance in trade accounts payable as of December 31. Year 4 . b. Compute the balance in retained earrings as of December 31, Year 4 . c. Compute the balance in the Inventory account ar of December 31, Year 4. (Aesume that the level of inventory did not change from last year) Note: For all requirements, negative amounts should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to the nearest whole doliar amount