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Parker Piastec, incorporated, manufactures plastic qusts to vse wath roling omce chairs. Its stendard cost informanion for last year follows: Parker Plastic Bod the folowing actual rewits for the past year Pequired: Calculate Parker Plastic's direct labor rate and efficiency variances Note: Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, " U"for unfavarable, and "None" for no effect (i.e., sero variance)