The 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 yield variance?

a.$18,000 (F)

b.$6,000 (U)

c.$18,000 (U)

d.$6,000 (F)