4. To reduce high defect rate, the production supervisor decided to purchase higher quality of raw materials. What would be the effect of this decision on the following: a) Material quantity variance b) Material cost variance? 5. The budgeted production of Grignoux, Inc. is 20,000 units per month. Each unit requires 40 minutes of direct labor to complete. The direct labor rate is $70 per hour. Calculate the budgeted cost of direct labor for the month. (Round any intermediate calculations to the nearest cent and your final answer to the nearest dollar.) 6. Skrypachova Engineering's actual operating income for the current year is $60,000. The flexible budget operating income for actual sales volume is $35,000, while the static budget operating income is $56,000. What is the sales volume variance for operating income