Suppose your economics professor has an extra copy of textbook that he or she would like to give to a student in the class. Which of the following schemes is the most likely to result in an efficient outcome?
A. Randomly selecting one student to receive the textbook.
B. Auctioning off the textbook to the highest bidder.
C. Letting students take turns using the textbook.
D. Giving the textbook to the student who has the lowest midterm score.