Tiller Plants planned to produce 3,000 units of its single product during November. The standard specifications for one unit include six pounds of material at $0.30 per pound. The actual production in November was 3,100 units. The accountant computed a favorable materials purchase price variance of $380 and an unfavorable materials quantity variance of $120. Based on these variances, one could conclude that: Group of answer choices The actual usage of the materials was less than the standard allowed More materials were used than were purchased More materials were purchases than were used The actual cost of the materials was less than the standard cost