Multiple Choice
A gift-giver's efficient number of gifts (to give to a gift-recipient) has fallen from 10 to 8. This could be because
A) the gift-giver's marginal benefit and marginal cost curves for giving gifts remained constant.
B) the gift-giver's marginal cost curve of giving gifts shifted up and leftward.
C) the gift-recipient "fell out" of the gift-giver's utility function.
D) the gift-giver's marginal cost curve of giving gifts shifted down and rightward.
Correct Answer:

Verified
Correct Answer:
Verified
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