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Delmar Inc uses a standard cost system. Labor standards are 2.0 hours per widget at $9.10 per hour. During August, Delmar Inc.pold Its workers $152,170 for 16,500 hours. Delmar Inc. produced 8,700 widgets during August. a. Calculate the direct labor rate variance. (Do not round your Intermediate calculations. Indicate the effect of varlance by selecting "Favorable". "Unfavorable", or "None" for no effect (.e., zero variance).) b. Calculate the direct labor efficiency variance. (Indicate the effect of variance by selecting "Favorable", "Unfavorable", or "None" for no effect (l.e., zero variance).) Eficiency Variance