3. Hobbs Corporation produces wicker chairs. The company uses a standard cost system and applies overhead based on direct labor hours. The company has established the following standard cost for one chair: The static budget for April calls for a production level of 7,000 chairs. The following information is available for the company's operations in April: - 6,750 chairs were manufactured. - 58,700 square yards of material were purchased at a total cost of $169,056. - There was no beginning materials inventory. However, there were 5,120 square yards of material in ending inventory. - $127,449 in wages were paid for 8,670 hours of direct labor. - Variable overhead incurred was $24,900. - Fixed overhead incurred was $42,850. a. What is the variable overhead spending variance for April? b. What is the variable efficiency variance for April