Suppose Lisa spends all of her money on books and coffee. When the price of coffee decreases, the

A) substitution effect on coffee is positive, and the income effect on coffee is positive.
B) substitution effect on coffee is ambiguous, and the income effect on coffee is ambiguous.
C) substitution effect on coffee is positive, and the income effect on coffee is ambiguous.
D) substitution effect on coffee is ambiguous, and the income effect on coffee is positive.


C

Economics

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