5. (8 points) You are a new junior accountant at In Focus Corporation, maker of lenses for eyeglasses. Your company sells generic-quality lenses for a moderate price. Your boss, the controller, has given you the latest month's report for the lens trade association. This report includes information related to operations for your firm and three of your competitors within the trade association. The report also includes information related to the industry benchmark for each line item in the report. You do not know which firm is which, except that you know you are Firm A. Unit Variable Costs Member Firms for the Month Ended September 30,20x7 Firm A Firm B Firm C Firm D Industry Benchmark Materials input 2.15 2.00 2.20 2.60 2.15 oz. of glass Materials price $5.00 $5.25 $5.10 $4.50 $5.10 per oz. Labor-hours used 0.75 1.00 0.65 0.70 0.70 hours Wage rate $14.50 $14.00 $14.25 $15.25 $12.50 per DLH Variable overhead rate $9.25 $14.00 $7.75 $11.75 $12.25 per DLH a. (4 points) Calculate the total cost per unit for each firm in the trade association. Compute the percent of total for the material, labor, and variable overhead components. b. (4 points) Using the trade association's industry benchmark, calculate direct materials and direct manufacturing labor price and efficiency variances for the four firms. Calculate the percent over standard for each firm and each variance