Assume Bryant Restaurants is deciding whether to replace some of its customer seating (tables) with a salad bar. Alternative 1, retain the tables as is, has revenues of revenues of $100,000, costs of $60,000, and profit of $40,000. Alternative 2, replace the tables with a salad bar has revenues of $130,000; costs of $70,000, and profit of $60,000. The differential cost is A) $10,000 B) $20,000 C) $30,000 D) $40,000 E) none of the above