Parker Plastic, Incorporated, manufactures plastic mats to use whth folling office chairs. Its standerd cost information for last year follows: Parker Plastic hod the following actual results for the past year: Required: Calculate Parker Plastic's direct labor rate and.eficiency variances. Note: 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 variarice)