A firm has two substitutable inputs (Chemical A and Chemical B) for its finished goods units. Typically the firm uses 12 gallons of Chemical A for every 8 gallons of Chemical B.

Chemical A standard price is $40.00 per gallon

Chemical B standard price is $50.00 per gallon

Chemical A actual price is $42.00 per gallon

Chemical B actual price is $45.00 per gallon

During this period, the firm instead actually used 11,000 gallons of Chemical A and 9,000 gallons of Chemical B (producing 20,000 gallons of finished goods).

What is the firm's mix variance for this product this period (round to nearest cent if necessary)?

A: $3,000 favorable

B: $10,000 favorable

C: $3,000 unfavorable

D: $10,000 unfavorable