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Correct! The increase in the price of grape juice shifts Caroline’s budget constraint in, along the grape juice axis. Accordingly, her budget set is smaller and the tangency with the highest indifference curve occurs at a smaller quantity of grape juice. Her preferences have not changed across the two indifference curves, U2 and U3. The difference between the two indifference curves is the level of total utility attained.
Incorrect! The increase in the price of grape juice shifts Caroline’s budget constraint in, along the grape juice axis. Accordingly, her budget set is smaller and the tangency with the highest indifference curve occurs at a smaller quantity of grape juice. Her preferences have not changed across the two indifference curves, U2 and U3. The difference between the two indifference curves is the level of total utility attained.