Parker Plastic, Inc., manufactures plastic mats to use with rolling office chairs. Its standard cost information for last year follows: Standard Standard Quantity 14 sq ft. $ 0.80 per sq. ft. 0.25 hr Standard Price (Rate) Unit Cost $ 11.20 Direct materials (plastic) Direct labor $12.40 per hr. 3.10 Variable manufacturing overhead (based on direct labor hours) Fixed manufacturing overhead ($519,680 928,000 units) 0.25 hr $ 1.60 per hr. 0.40 0.56 Parker Plastic had the following actual results for the past year: Number of units produced and sold Number of square feet of plastic used Cost of plastic purchased and used 1,220,000 12,300,000 $ 8,610,000 326,000 Number of labor hours worked Direct labor cost $ 3,912,000 Variable overhead cost Fixed overhead cost $ 1,240,000 $ 383,000 Required: Calculate Parker Plastic's direct labor rate and efficiency variances. (Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance).) Direct Labor Rate Variance Direct Labor Efficiency Variance