You are a new junior accountant at Clerical 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 don't know which firm is which except that you know you are Firm A. Unit Variable Costs Member Firms For the Month Ended September 30, 2020 Firm A Firm B Firm Firm D Industry Benchmark Materials Input 2oz 1.9502 2.150z 2.5oz 2.0oz per glass Materials Price $4.00 $5.60 $5.00 $4.50 $5.00 per oz Labor Hours Used 1.10 1.15 0.95 1.00 1.00 hour Wage Rate $15.00 $15.50 $16.50 $15.90 S13 per DLH Variable Overhead $9.00 $13.50 $7.50 $11.25 $12 per DLH Rate Required: B. Using the trade associations industry benchmark calculate direct material and direct labor price and efficiency variances for the four firms