A company manufactures sofas with vinyl covering. The standard material cost for the vinyl for one sofa is $27.00 based on twelve square feet of vinyl at a cost of $2.25 per square foot. A production run of 1,000 sofas resulted in usage of 12,600 square feet of vinyl at a cost of $2.50 per square foot, a total cost of $31,500. The price variance resulting from the above production run was: $1,800 favorable $1,200 unfavorable $3,150 favorable $3,150 unfavorable