Cool Leather Products (CLP) produces leather clothing and accessories. The company has developed a static budget for its leather purses manufacturing department for the first quarter. During the quarter the actual activity was 22,000 direct labour hours. Results at the end of the first quarter are shown below. Direct labour hours Direct materials Direct labour Rent Share of fixed manufacturing overhead Total Costs Static Budget Actual 20,000 22,000 $80,000 $91,000 160,000 174,000 48,000 50,000 12,000 11,000 $300,000 $326,000 Required: a) Calculate relevant variances to assess cost control for the manufacturing department. b) Provide a reasonable explanation for the variances with respect to direct materials and direct labour.