Use this information to answer the question that follow. The following data relate to direct materials costs for February: Materials cost per yard: standard, $1.94; actual, $2.04 Standard yards per unit: standard, 4.64 yards; actual, 4.98 yards Units of production: 9,500 Calculate the direct materials quantity variance. Oa. $6,589.20 favorable Ob. $6,589.20 unfavorable Oc. $6,266.20 unfavorable Od. $6,266.20 favorable