Crane Company has a materials price standard of $2.00 per pound. 4000 pounds of materials were purchased at $2.20 a pound. The actual quantity of materials used was 4000 pounds, although the standard quantity allowed for the output was 3400 pounds. Crane Company's total materials variance is

$2120 F. A

$2000 U. B

$2000 F. C

$2120 U. D