The standard cost of Product B manufactured by Pharrell Company includes 3.7 units of direct materials at exist6.2 per unit. During June, 27, 100 units of direct materials are purchased at a cost of exist6.10 per unit, and 27, 100 units of direct materials are used to produce 7, 200 units of Product B. (a) Compute the total materials variance and the price and quantity variances. Total materials variance exist Materials price variances exist Materials quantity variance exist (b) Compute the total materials variance and the price and quantity variances, assuming the purchase price is exist6.30 and the quantity purchased and used is 27,000 units. Total materials variance exist Materials price variance exist Materials quantity variance exist