Required information [The following information applies to the questions displayed below.] Trini Company set the following standard costs per unit for its single product. Direct materials (30 pounds @ $4 per pound) Direct labor (5 hours @ $14 per hour) Variable overhead (5 hours @ $8 per hour) Fixed overhead (5 hours @ $10 per hour) Standard cost per unit $ 120.00 70.00 40.00 50.00 $ 280.00 Overhead is applied using direct labor hours. The standard overhead rate is based on a predicted activity level of 80% of the company's capacity of 60,000 units per quarter. The following additional information is available. Production (in units) Standard direct labor hours (5 DLH/unit) Budgeted overhead (flexible budget) Fixed overhead Variable overhead Operating Levels 70% 80% 42,000 units 210,000 hours. $ 2,400,000 48,000 240,000 $ 2,400,000 units hours. 90% 54,000 270,000 units hours. $ 2,400,000 $ 1,680,000 $ 1,920,000 $ 2,160,000 During the current quarter, the company operated at 90% of capacity and produced 54,000 units; actual direct labor totaled 265,000 hours. Units produced were assigned the following standard costs. Direct materials (1,620,000 pounds $4 per pound) Direct labor (270,000 hours @ $14 per hour) Overhead (270,000 hours @ $18 per hour) Standard (budgeted) cost Actual costs incurred during the current quarter follow. Direct materials (1,615,000 pounds @ $4.10 per pound) Direct labor (265,000 hours @ $13.75 per hour) Fixed overhead Variable overhead Actual cost $ 6,480,000 3,780,000 4,860,000 $ 15,120,000 $ 6,621,500 3,643,750 2,350,000 2,200,000 $ 14,815,250 Required: (a) Compute the variable overhead spending and efficiency variances. (b) Compute the fixed overhead spending and volume variances. (c) Compute the overhead controllable variance.