Holl Corporation has provided the following data for November. Denominator level of activity Budgeted fixed manufacturing overhead costs Standard machine-hours allowed for the actual output Actual fixed manufacturing overhead costs 5,200 machine-hours $63,440 5,500 machine-hours $62,400 Required: a. Compute the budget variance for November. b. Compute the volume variance for November. (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values.) a. Budget variance b. Volume variance