Basil Tooling uses a standard cost system to account for the costs of its one product. Standards are 4.0 sheets of 12 inch steel at $110 per sheet and 14.0 hours of labor at a standard wage rate of $13. During July, Basil Tooling produced 620 units. Materials purchased and used totaled 2,590 sheets at a total cost of $273,350. Payroll totaled $114,160 for 8,870 hours worked. a. Calculate the direct materials price variance. (Do not round your intermediate calculations. Indicate the effect of variance by selecting "Favorable", "Unfavorable", or "None" for no effect (i.e., zero variance).) Price Variance b. Calculate the direct materials quantity variance. (Indicate the effect of variance by selecting "Favorable", "Unfavorable", or "None" for no effect (i.e., zero variance).) Quantity Variance Quantity Variance D I C. 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 (i.e., zero variance).) Rate Variance d. Calculate the direct labor efficiency variance. (Indicate the effect of variance by selecting "Favorable", "Unfavorable", or "None" for no effect (i.e., zero variance).) Efficiency Variance