Marketing department of metroline manufacturing estimates that its sales in 2020 will be $ 1.57 million. interest expense is expected to remain unchanged at $ 36 comma 000, and the firm plans to pay $ 65 comma 000 in cash dividends during 2020. metroline manufacturing's income statement for the year ended december 31, 2019, is given , along with a breakdown of the firm's cost of goods sold and operating expenses into their fixed and variable components. a. use the percent-of-sales method to prepare a pro forma income statement for the year ended december 31, 2020. b. use fixed and variable cost data to develop a pro forma income statement for the year