Carla Vista Company has provided you with the following information regarding its inventory of copper for September and October. Carla Vista uses a perpetual inventory system. (a) Calculate the cost, the net realizable value, and the amount to be reported on the balance sheet for Carla Vista's inventory at (1) September 30 and (2) October 31. Caiculate the cost, the net realizable value, and the amount to be reported on the balance sheet for Carla Vista's inventory at (1) September 30 and (2) October 31