Please answer both parts of the question and only if you know how to, thank you.

Income statements for Thornton Company for Year 3 and Year 4 follow: 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. Perform a horizontal analysis, showing the percentage change in each income statement component between Year 3 and Year 4. Note: Negative answers should be indicated by a minus sign. Round your answers to 1 decimal place. (i.e., .234 should be entered as 23.4). Perform a vertical analysis, showing each income statement component as a percentage of sales for each year. Note: Percentages may not add exactly due to rounding. Round your answers to 1 decimal place. (i.e., .234 should be entered as23.4 )