Question One - Problem solving (calculations and analysis): Hari 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, Hari Labs must constantly monitor and control its testing costs. Shown below are the standard costs for a typical test. Direct materials (2 test tubes @ OMR1.46 per tube) Direct labor (1 hour @ OMR24 per hour) Variable overhead (1 hour @ OMR6 per hour Fixed overhead (1 hour @ OMR10 per hour) Total standard cost per test OMR 2.92 24.00 6.00 10.00 42.92 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 2021, when 1,475 tests were conducted, resulted in the following. OMR Direct materials (3,050 test tubes) 4,270 Direct labor (1,550 hours) 35,650 Variable overhead 7,400 Fixed overhead 15,000 Monthly budgeted fixed overhead is OMR14,000. Revenues for the month were OMR75,000, and selling and administrative expenses were OMR5,000. Instructions a. Compute the price and quantity variances for direct materials and direct labour (4 marks) b. Compute the total overhead variance (2 mark). c. Prepare an income statement for management (6 marks). d. Critically provide one possible explanation for each unfavourable variance