10. If an increase in income leads to in an increase in the demand for peanut butter, then peanut butter is A) a neutral good. B) a normal good. C) a necessity. D) a complement.

10. If an increase in income leads to in an increase in the demand for peanut butter, then peanut butter is
A) a neutral good.
B) a normal good.
C) a necessity.
D) a complement.

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