During 2017, Fresh Express Company sold 2,570 units of its product on September 20 and 3,350 units on December 22, all at a price of $97 per unit. Incurring operating expenses of $13 per unit sold, it began the year with and made successive purchases of the product as follows: January 1 beginning inventory 670 units @ $ 42 per unit Purchases: February 20 1,570 units @ $ 44 per unit May 16 770 units @ $ 48 per unit December 11 3,370 units @ $ 49 per unit Total 6,380 units Required: Prepare a comparative income statement for the company, showing in adjacent columns the profits earned from the sale of the product, assuming the company uses a perpetual inventory system and prices its ending inventory on the basis of (a) FIFO and (b) Moving weighted average: