The following materials standards have been established for a particular product: Standard quantity per unit of output ....... Standard price.. 4.6 feet S19.40 per feet The following data pertain to operations concerning the product for the last month: Actual materials purchased ................ Actual cost of materials purchased ........ Actual materials uscd in production....... Actual output.. 1,100 feet $20,680 1,000 feet 100 units What is the materials quantity variance for the month? $1,880 U $10,476 U $1,940 U $10,152 U