Hart Labs, Inc. provides mad cow disease testing for both state and federal governmental agricultural agencies. Because the company's customers are governmental agencies, prices are strictly regulated. Therefore. Hart Labs must constantly monitor and control its testing costs. Shown below are the standard costs for a typical test. Direct materials (2 test tubes @ $1.00 per tube) $2.00 Direct labor (1 hour @ $31 per hour) 31.00 Variable overhead (1 hour @ $7.00 per hour) Fixed overhead (1 hour @ $12,00 per hour) 12.00 Total standard cost per test $52.00 7.00 The lab does not maintain an inventory of test tubes. As a result, the tubes purchased each month are used that month. Actual activity for the month of November 2020, when 1.000 tests were conducted resulted in the following Direct materials (2.100 test tubes) $1,890 Direct labor (1,040 hours 30,160 Variable overhead 5,700 Fixed overtad 12.340 Monthly budgeted fixed overhead is $17,160, Revenues for the month were $65,000, and selling and administrative expenses were $4,900