34. CVP Sensitivity Analysis (Multiple Products). Strausburg Company produces two different products that have the following monthly data (this is the base case). Violin Cello Total Selling price per unit $300 $1,200 Variable cost per unit $120 $ 720 Expected unit sales 30 1,400 600 2,000 Sales mix 70 percent 30 percent 100 percent $180,000 Required: Fixed costs For each of the independent situations in requirements b through d, assume that total sales remains at 2,000 units. a. Prepare a contribution margin income statement. b. Refer to the base case. What would the operating profit be if the Violin sales price (1) increases 20 percent, or (2) decreases 20 percent? c. Refer to the base case. What would the operating profit be if the Violin sales volume increases 400 units with a corresponding decrease of 400 units in Cello sales? d. Refer to the base case. What would the operating profit be if total fixed costs increase five percent? Does this increase in fixed costs result in higher operating leverage or lower operating leverage? Explain