The standard cost of Product B manufactured by Sunland Company includes 3.1 units of direct materials at $6.10 per unit. During June, 26,900 units of direct materials are purchased at a cost of $5.85 per unit, and 26,900 units of direct materials are used to produce 8,400 units of Product B. (a) Compute the total materials variance and the price and quantity variances. Total materials variance Materials price variance Materials quantity variance $ (b) Compute the total materials variance and the price and quantity variances, assuming the purchase price is $6.15 and the quantity purchased and used is 25.900 units. Total materials variance Materials price variance Materials quantity variance