Calculate a) cost of goods sold, b) ending inventory, and c) gross mamin for A76 Cempany, contidering the following transactions under three differant cost allocation methods and using perpetual anventory updoting. Provide colculotions for first-int, first-out (FirO). Note: For negative amounts, input value beginnisg with a minut sign, Ending Inventory 220 FIFO (perpetual) Inventory FITo (perpetaal) Imventory