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Refer to the figure below. Total utility _ as additional apples are consumed, but marginal utility _ with each additional apple consumed.

Refer to the figure below. Total utility _ as additional apples are consumed, but marginal utility _ with each additional apple consumed.
A.first increases then decreases; decreases
B.first decreases then increases; decreases
C.first decreases then increases; increases
D.first increases then decreases; increases
正确答案:first increases then decreases; decreases