Riverbed, Inc. manufactures one product called tybos. The company uses a standard cost system and sells each tybo for $8. At the start of monthly production, Riverbed estimated 9,640 tybos would be produced in March. Riverbed has established the following material and labor standards to produce one tybo: During March 2022, the following activity was recorded by the company relating to the production of tybos: 1. The company produced 9,430 units during the month. 2 A total of 24,360 pounds of materials were purchased at a cost of $66,990. 3. A total of 24,360 pounds of materials were used in production. 4. 5.330 hours of lator were incurred during the month at a total wage cost of $58,630. Calculate the following variances for March for Riverbed, Inc. Identify whether each variance is favorable or unfavorable. (a) Materials Price Variance (b) Materials Quantity Variance (c) Labor Price Variance (d) Labor Quantity Variance