4. Below are revenue and expense data for the current calendar year for Tammy Company and the electronics industry, Tammy's data are stated in dollars and the electronics industry averages are stated in percentages. Required: a. Prepare a common-sized income statement comparing the results of operations for Tammy Company with the industry average. Round to the nearest whole percentage. b. What conclusions can you draw from the significant relationships revealed by the common-sized analysis and comparisons