Question 2 (10 points) Markus Limited produces a specialised machine part used in forklifts. For last year's operations, the following data were gathered: Units produced: 56,000 Direct labour: 30,000 hours @ $9.00 Actual variable overhead: $150,000 Markus employs a standard costing system. During the year, a variable overhead rate of $5.50 per hour was used. The labour standard requires 0.50 hours per unit produced. Required: Calculate the flexible-budget variance, the spending variance and the efficiency variance for variable manufacturing overhead