San Jose Corporation uses two materials in the production of its product. The materials, G and H, have the following standards:

Material	Standard Mix	Standard Unit Price	Standard Cost
G	5,250 units	$1.50 per unit	$ 7,875
H	2,250 units	4.50 per unit	10,125
Yield	6,000 units

During June, the following actual production information was provided:

Material	Actual Mix
G	45,000 units
H	30,000 units
Yield	54,000 units

What is the materials mix variance?

$18,000 F

$18,000 U

$22,500 F

$22,500 U