Anderson Compounds produces two industrial chemical compounds, Gorp and Gumm, from the same process, which last year, cost $240,000. Anderson produced 20,000 pounds of Gorp, which sells for $60 per gallon and 60,000 gallons of Gumm, which sells for $30 per gallon. After the split-off point, Gorp required additional processing costing $300,000 to make it salable. Using the adjusted sales method, what is the completed cost of Gorp?

a.	$300,000
b.	$380,000
c.	$520,000
d.	$540,000