QS 23-13 (Static) Overhead variances: total, controllable, and volume LO P4 Derr Company reports the following. Compute (a) controllable variance, (b) volume variance, and (c) total overhead variance. Actual total overhead Budgeted (flexible) overhead at units produced Standard overhead applied $ 980 800 900 Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Compute controllable variance. (Indicate the effect of the variance by selecting favorable, unfavorable, or no variance.) Controllable Variance Controllable variance Required 2 >