The following materials standards have been established for 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...... $34,650 1,900 pounds 4,200 units What is the materials price variance for the month? $3,320 F $3,110 U $6,430 F $3,110 F $3,320 U