Required: (a) Compute the variable overhead spending and elficiency variances. (b) Compute the fixed overhesd spending and volume variances (c) Compute the overhedd controliable varlance Complete this question by entering your answers in the tabs belew. Trini Company set the following standard costs per unit for its single product 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 67,000 units per quarter. The following additional information is available. During the current quarter, the company operated at 90% of capacity and produced 60,300 units; actual direct labor totaled 399,200 hours. Units produced were assigned the following standard costs. 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. Complete this question by entering your answers in the tabs below. 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. Complete this question by entering your answers in the tabs below. Compute the overhead controllable variance. (Indicate the effect of each variance by selecting favorable, unfavorable, or no variance.)