Direct Materials, Direct Labor, and Factory Overhead Cost Variance Analysis Santiago Inc. procestses a base chemical into plastic. Standard costs and actual costs for direct materials, drect iabor, and factory overhead incurred for the manufacture of 78,000 units of product were as follows: Aequired a. Determine the direct materals price vaiance, direct materiais quantity wariance, and total direct materiais con varianct. Enter a favarable variance os a negative number uaing a minus sigh and an unfayorable variance as a posaive fumber. b. Determine the direct tabor rate yarance, direct labor time variance, and total direct labor cost variance. Enter a favarable variance as a negative number using a thinus sign and an untayorable variance as a posive number. c. Determine the variable factory overhead conkroliable variance, fixed factory overhead volume variance, and total factary overhead coet variance, Encer a favorable variance as a necotive number using a minus sign and an unfavorable variance os a cofilivenumber: Determine the variable factory overhead controllable variance, foxed 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