11. (20 points) Alum manufactures aluminum strips for commercial building construction. Alum makes three types of strips 1/8 inch, 1/4 inch and 1/2 inch. Actual and Budget operating data by product for the most recent reporting period are as follows: Budgeted sales in units Budgeted selling price per unit Budgeted variable cost per unit Actual sales in units Actual selling price per unit Actual variable cost per unit 1/8 in. 7,500 $ 20 $ 15 4,200 $ 25 $ 16 1/4 in. 22,500 $ 30 $ 17 16,800 $ 35 $18 1/2 in. 20,000 $ 40 $20 21,000 $ 42 $ 22 a. Calculate the sales-volume variance for each product and in total. b. Calculate the sales-mix variance for each product and in total. C. Calculate the sales-quantity variance for each product and in total. d. Report to your manager the one most relevant insight/issue from your analysis above