Exercise 9-3A (Algo) Horizontal and vertical analysis LO 9-1 Income statements for Zachary Company for Year 3 and Year 4 follow: ZACHARY COMPANY Income Statements Year 4 Sales $200,400 Year 3. $180,400 Cost of goods sold 142,700 120,700 Selling expenses 21,900 19,900 Administrative expenses 12,300 14,300 Interest expense 3,200 5,200 Total expenses $180,100 $160,100 Incone before taxes: Income taxes expense Net income 20,300 5,600 $14,700 20,300 3,300 $ 17,000 Required a. Perform a horizontal analysis, showing the percentage change in each income statement component between Year 3 and Year 4. b. Perform a vertical analysis, showing each income statement component as a percentage of sales for each year. Complete this question by entering your answers in the tabs below. Required A Required B Perform a horizontal analysis, showing the percentage change in each income statement component between Year 3 and Year 4. (Negative answers should be indicated by a minus sign. Round your percentage answers to 1 decimal place. (1.e., 0.234