ackinaw Inc. processes a base chemical into plastic, Standard costs and actual costs for direct materials, direct labor, and factory overhead incurred for the manufact f 78,000 units of product were as follows: Required: a. Determine the direct materials price varance, direct materials quantity variance, and totel direct materials cost variance. Enter a favorable variance as a negative number using a minus sign and an unfayarable variance as a positive number. b. Determine the direct iabor rate variakce, direct labor time variance, and total direct labor cost vatiance. Enter a favorable variance as a negative number using a minus sign and an untevorable variance as a positive number. Determine the direct materials price variance, direct materials quantity veriance, and total direct materials cost variance. Enter a favorable variance as a negative umber using a minus sign and an unfavorable varlance as a positive number. b. Determine the direct labor rate vartance, direct labor time variance, and total direct labor cost variance. Enter a favorable variance as a negative namber 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 overthead cost varianch. Enter a favorable variance as a negative number using a minus sigh and an unfavorable variance as a positive number