The standards for one case of Springfever Tonic are as follows Direct materials Direct labor Variable overhead (based on direct labor hours) 3 hr @$13.00hr $ 39 3hr 600hr 18 During the week ended August 28, the tollowing activity took place 7,400 lb of raw materials were purchased for inventory at a cost of $4 95 per pound 2,000 cases of finished product were produced 8,300 lb of raw materials were used 5,800 direct labor hours were worked at a total cost of $78,300 $35,670 of actual variable overhead costs were incurred Required: Calculate each of the following variances, (Do not round Intermediate calculations Indicate the offect of each variance by selecting F" tor tavorable, "U" tor untavorable, and None" for no effect (i.e, zero variance).) a Price varlance for raw materials purchased b. Raw materials usage variance c Direct labor rate varlance d Direct labor efficiency varlance e Variable overhead spending varlance Variable overhead efficiency variance