Alpha Company produces toys for national distribution. Standards for a particular toy are: Materials: 12 grams per unit at 56 cents per gram. Labour: 2 hours per unit at $12.75 per hour. During the month of December, the company produced 1,000 units. Information for the month follows: Materials: 14,000 grams were purchased and used at a total cost of $7,140, Labour: 2,500 hours worked at a total cost of $33,000.The materials price variance is?

Select one:

A. $420 U.

B. $700 U.

C. $420 F.

D. $700 U.