The Litton Company has established standards as follows: Direct material: 3 pounds per unit @ S4 per pound = $12 per unit Direct labor: 2 hours per unit @ $8 per hour = $16 per unit Variable manufacturing overhead: 2 hours per unit @ $5 per hour = $10 per unit Actual production figures for the past year are given below. The company records the materials price variance when materials are purchased. Units produced.. 600 units Direct material used. ........... 2,000 pounds Direct material purchased (3,000 pounds)............ S11,400 Direct labor cost (1,100 hours) .......... $9,240 Variable manufacturing overhead cost incurred..... $5,720 The materials price variance is: A. $400 U B. $400 F C. $600 F D. $600 U