The following data relate to direct materials costs for February: Materials cost per yard: standard, $1.90; actual, $2.05 Standard yards per unit: standard, 4.65 yards; actual, 5.08 yards Units of production: 9,500 Calculate the direct materials quantity variance. a.$7,761.50 unfavorable b.$8,374.25 favorable c.$8,374.25 unfavorable d.$7,761.50 favorable