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 74,000 units of product were as follows: Standard Costs Actual Costs Direct materials 207,200 lbs. at $5.60 per lb. 205,100 lbs. at $5.40 per lb. Direct labor 18,500 hrs. at $17.10 per hr. 18,930 hrs. at $17.40 per hr. Factory overhead Rates per direct labor hr., based on 100% of normal capacity of 19,310 direct labor hrs.: $86,080 variable cost $142,894 fixed cost Variable cost, $4.70 Fixed cost, $7.40 Each unit requires 0.25 hour of direct labor. Required: 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. Direct Materials Price Variance Direct Materials Quantity Variance Total Direct Materials Cost Variance 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. Direct Labor Rate Variance Direct Labor Time Variance Total Direct Labor Cost Variance 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. Variable factory overhead controllable variance Fixed factory overhead volume variance Total factory overhead cost variance