Vaughn 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, Vaughn Labs must constantly monitor and control its testing costs. Shown below are the standard costs for a typical test. Direct materials (2 test tubes @ $1.90 per tube) Direct labor (1 hour @ $30 per hour) Variable overhead (1 hour @ $7.00 per hour) Fixed overhead (1 hour @ $12.00 per hour) Total standard cost per test 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 2022, when 1,100 tests were conducted, resulted in the following. Direct materials (2,310 test tubes) Direct labor (1,155 hours) Variable overhead Fixed overhead $4,158 33,495 7,106 13,101 Monthly budgeted fixed overhead is $17,400. Revenues for the month were $73,700, and selling and administrative expenses were $4,500. (a) Compute the price and quantity variances for direct materials and direct labor. Materials price variance Materials quantity variance Labor price variance Labor quantity variance $ LA LA $ LA $ $