The management of William Broom Co. has calculated the following variances: Direct materials cost variance $11,000 U Direct materials efficiency variance 36,000 F Direct labor cost variance 22.500 F Direct labor efficiency variance 13,500 U Total variable overhead variance 7500 F Total fixed overhead variance 4000 F What is the firm's total direct materials variance? $11,500 F $5,500 F $3,000 F $25,000 F