Direct Materials, Direct Labor, and Factory Overhead Cost Variance Analysis Mackinaw inc. processes a base chemical into plastic. Standard costs and actual costs for direct materials, direct labor, and factory overhead incurred for the manufactur of 70,000 units of product were as follows: Each unit requires 0.25 hour of direct labor. Required: a. Determine the direct materiais price variance, direct materials quantity variance, and total direct materials cost yariance. Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number. Determine the direct materials price variance, direct materials quantity variance, and total direct materials cost variance. Enter a favorable variance as a negative number using a minus sign and an unfavorable variane as a positive number. b. Determine the direct labor rate variance, direct labor time variance, and total direct labor cost variance. Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number. c. Determine the variable factory overhead controliable variance, fixed factory overhead volume variance, and total factory overhead cost variance, Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number