Delmar Inc uses a standard cost system. Labor standards are 21 hours per widget at $9.00 per hour. During August, Delmar Inc. paid its workers $153,220 for 16,800 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 variance by selecting "Favorable", "Unfavorable", or "None" for no effect (l.e., zero variance).) Rate Variance b. Calculate the direct labor efficiency variance. (Indicate the effect of variance by selecting "Favorable", "Unfavorable", or "None" for no effect (ie. zero variance).) Eficiency Variance