Use this information to answer the question that follow. The following data relate to direct materials costs for February: Materials cost per yard: standard, $1.93; actual, $2.04 Standard yards per unit: standard, 4.61 yards; actual, 5.18 yards Units of production: 9,400 Calculate the direct materials quantity variance. Oa. $10,930.32 favorable Ob. $10,930.32 unfavorable Oc. $10,340.94 unfavorable Od. $10,340.94 favorable