Bulk PVC manufactures PVC pipes for plumbing. The direct materials quantity standard is 1.3 pounds of PVC per pipe, and one pound of PVC is expected to cost $1.89. In June, Bulk made 50,000 pipes and used 65,400 pounds of PVC. The total cost for materials was $123,500. What is Bulks materials price variance for June?

a. $650 favorable

b. $106 favorable

c.$650 unfavorable

d.$106 unfavorable