A Basketball Manufacturer Is Considering a Number of Options for Its

A basketball manufacturer is considering a number of options for its new factory.Given the following costs and benefits of the four different factory configurations,what are the marginal costs and benefits of the Extra Large configuration relative to the Large configuration?
........................Total Cost......Total Benefit
Configuration A(Small) ..................$45,000.........70,000
Configuration B(Medium) ...............120,000.......170,000
Configuration C (Large) ..............240,000.......300,000
Configuration D (Extra Large) .........400,000.......420,000

A) Marginal cost of $160,000 and marginal benefit of $120,000.
B) Marginal cost of $400,000 and marginal benefit of $420,000.
C) Marginal cost of $120,000 and marginal benefit of $120,000.
D) Marginal cost of $160,000 and marginal benefit of $220,000.