Effects of Inventory Costing Methods Beston, Inc. has the following income statement data avallabie for the year: Beston uses a perpetual ieventory accouinting system and the average cost method. Beston is considering adopting the FIFO or LIFO method for costing inventory. Beston'? accountant prepared the following data: 1. Compute income before taxes, income taxes expense, and net income for each of the three inventory costing methods. (Round to the nearest dollar).