analyze the pro forma statement using the percent of sales method under best-case and worst-case scenarios given below sales are $100,000, COGS is $43,000 SG&A is $22,000. Depreciation is 10,000 and the tax rate is 21%. a. Best-case sales increase by 20%. B. Worst-case sales decrease by 5% please show the work in detail basically how each answer is arrived at.