The following data relate to direct materials costs for February: Materials cost per yard: standard, $1.92; actual, $2.05 Standard yards per unit: standard, 4.74 yards; actual, 5.13 yards Units of production: 9,500 Calculate the direct materials quantity variance. Oa. $7,113.60 unfavorable Ob. 57,595,25 unfavorable c. $7,595.25 favorable Od. 7,113.60 favorable