Card 85 / 145: Which of the following is NOT an example of intertemporal substitution?
A) Sandy works 10-hour days as a ski instructor during the winter months but takes a three-week vacation during the summer.
B) Thomas studies economics two hours every night in order to get a good grade in the course.
C) Luke is an accountant who works overtime during tax season.
D) David decides to go to college after high school, since he has graduated in the middle of a big recession and jobs are hard to come by.

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