Suppose Chris’s marginal utility from the first taco he eats is 15, and his marginal utility from the second taco he eats is 12. One can infer that:

A.Chris should eat two tacos.

B.Chris’s total utility from eating two tacos is 27.

C.Chris’s average utility from eating two tacos is 27.

D.Chris should eat one taco.

正确答案：Chris’s total utility from eating two tacos is 27.