You are considering upgrading from your current inkjet printer to a laser printer. Your old printer cost $350. The new printer costs \$600. Print cartridges for the old printer cost $80 each, and print cartridges for the new printer cost $120 each. Cartridges for both. printers last for approximately 500 sheets of printing. Your roommate has offered to purchase your old printer for $50. You expect to print 250 sheets per month. What is the annual incremental cost of ink cartridges for the two printers? $240$720$480$1,200