Parker Plastic, Incorporated, manufactures plastic mats to use with rolling office chairs. Its standard cost Information for last year follows: Parker Plastic had the following actual results for the past year: Required: Calculate Parker Plastic's direct labor rate and efficlency varlances. Note: Do not round Intermedlate calculations. Indlcate the effect of each varlance by selectlng "F" for favorable, "U" for unfavorable, and "None" for no effect (I.e., zero varlance)