Which of the fallawing statements if farel true? rines of these 5119000 bo s7ishog e fremasox d $111,250 Selett be nore ot thene x 85. S00U tor dibour hine, \$5.003 \& tor incor efficieng Under a standard cost system, the material quantity variances are usually the responsibility of the: Select one: sales manager production manager engineering manager purchasing manager x