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Direct Materials, Direct Labor, and Factory Overhead Cost Variance Analysis Santiago Inc. processes a base chemical into plastic. Standard costs and actual costs for direct materials, direct labor, and factory overhead incurred for the manufacture of 70,000 units of product were as follows: Required: a. Determ T 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 variance as a positive number. b. Determine the direct labor rate variance, direct labor time variance, and total direct labor cost variance. Enter a fovorable variance as a negative number using a minus sign and an unfovorabie variance as a positive number. a. 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 variance 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 negative number using a minus sign and an unfavorable variance as a positive number. c. Determine the variable factory overhead controllable 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