4. Compute gross profit earned by the company for each of the four costing methods. Note: Round your average cost per unit to 2 decimal places. FIFO LIFO Weighted Average Specific Identification Sales Less: Cost of goods sold Gross profit $ 0 $ 0 $ 0 $ 0 5. The company's manager earns a bonus based on a percent of gross profit. Which method of inventory costing produces the highest bonus for the manager? O Specific Identification O LIFO O FIFO Weighted Average