Montoursville Control Company, which manufactures electrical switches, uses a standard-costing system. The standard production overhead costs per switch are based on direct-labor hours and are as follows: Variable overhead (5 direct-labor hours $13.00 per hour) Fixed overhead (5 direct-labor hours @ $23.00 per hour) Total overhead $ 65 115 $180 "Based on capacity of 305,500 direct-labor hours per month. The following information is available for the month of October Variable overhead costs were $4,860,000. Fixed overhead costs were $7,275,000. 58,100 switches were produced, although 61,100 switches were scheduled to be produced. 286,000 direct-labor hours were worked at a total cost of $4,925,000. Required: Compute the variable-overhead spending and efficiency variances and the fixed-overhead budget and volume variances for October. (Indicate the effect of each variance by selecting "Favorable" or "Unfavorable". Select "None" and enter "O" for no effect (i.e., zero variance).) Variable-overhead spending variance Variable-overhead efficiency variance Fixed-overhead budget variance Fixed-overhead volume variance