10 11 pts The following materials standards have been established for a particular raw material used in the company's sole product: Standard quantity per unit of output........... 0.5 pound Standard $16.60 per price......... pound The following data pertain to operations concerning the product for the last month: Actual cost of materials... Actual materials used in production............ Actual output....... $35,200 2,200 pounds 4,200 units What is the materials quantity variance for the month? $1,320 U $2,980 F $1,320 F $1,660 F $1,660 U