A cyclist must decide between purchasing a new helmet for about $60 or a set of aerobars for about $120. If she decides to purchase
the aerobars, what is the opportunity cost?
A. The net value to the cyclist of the helmet.
B. The difference in price of $60.
C. The net value to the cyclist of $60 and a new helmet.
D. The net value to the cyclist of the new aerobars.