According to the producer price index database maintained by the Bureau of Labor Statistics, the average cost of computer equipment fell 3.8 percent between January and December 2016. Required: 1. Conduct a horizontal analysis by calculating the year-over-year changes in each line item, expressed in dollars and in percentages for the income statement of Computer Tycoon Inc. for the year ended December 31, 2016. 2-a. Conduct a vertical analysis by expressing each line as a percentage of total revenues. 2-b. Excluding income tax, interest, and operating expenses, did Computer Tycoon earn more profit per dollar of sales in 2016 compared to 2015?