Use this information to answer the question that follow. The following data relate to direct materials costs for February: Materials cost per yard: standard, $1.95; actual, $2.05 Standard yards per unit: standard, 4.71 yards; actual, 5.00 yards Units of production: 9,300 Calculate the direct materials quantity variance. Oa $5,528.85 unfavorable Ob. $5,259.15 unfavorable Oc: $5,259.15 favorable Od: $5,528.85 favorable