Income statements for Campbell Company for Year 3 and Year 4 follow: CAMPBELL COMPANY Income Statements Year 4 Year 3. Sales $201,500 $181,500 Cost of goods sold 142,900 120,900 Selling expenses 21,300 19,300 Administrative expenses 12,600 14,600 Interest expense 3,000 5,000 Total expenses $179,800 $159,800 Income before taxes Income taxes expense Net income $ 16,200 $ 18,100 21,700 5,500 21,700 3,600 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.