The standard cost of Product B manufactured by Cullumber Company includes 2.3 units of direct materials at $6.70 per unit. During June, 26,800 units of direct materials are purchased at a cost of $6.65 per unit, and 26,800 units of direct materials are used to produce 11,500 units of Product B. (a) Compute the total materials variance and the price and quantity variances. (b) Compute the total materials variance and the price and quantity variances, assuming the purchase price is $6.75 and the quantity purchased and used is 26,700 units. Total materials variance $ Materials price variance $ Materials quantity variance $