The standard cost of Product B manufactured by Pharrell Company includes 3.7 units of direct materials at $6.80 per unit. During June 26,600 units of direct materials are purchased at a cost of $6.70 per unit and 26.600 units of direct materials are used to produce 7.100 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 $6.90 and the quantity purchased and used is 27.000 units Total materials variance $ Materials price variance $ 3 Materials quantity variance $