Cox Engineering performs cement core tests in its laboratory. The following standards have been set for each core test performed:Standard Hours or Quantity or Rate Standard PriceDirect materials 3 pounds $0.75 per poundDirect labor 0.4 hours $12 per hourVariable manufacturing overhead 0.4 hours $9 per hourDuring March, the laboratory performed 2,000 core tests. On March 1 no direct materials (sand) were on hand. Variable manufacturing overhead is assigned to core tests on the basis of standard direct labor-hours.The following events occurred during March:[1] 8,600 pounds of sand were purchased at a cost of $7,310.[2] 7,200 pounds of sand were used for core tests.[3] 840 actual direct labor-hours were worked at a cost of $8,610.[4] Actual variable manufacturing overhead incurred was $3,200.REQUIRED: (NOTE: You must show your computations)(a) The materials price variance for March is:(b) The materials quantity variance for March is:(c) The labor rate variance for March is:(d) The labor efficiency variance for March is:(e) The variable overhead efficiency variance for March is: