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.......... Standard price......... 0.5 pound $16.60 per 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 price variance for the month? $1,660 F $1,660 U $1,320 F $2.980 F $1,320 U