Suppose a concert by Rihanna and a basketball game played by the Houston Rockets are substitutes, then which of the following is TRUE?
A) If the price of a ticket to a Rockets game increases, then the demand for Rihanna tickets will fall.
B) If the price of a ticket to a Rockets game decreases, then the demand for Rihanna tickets will fall.
C) If the price of a ticket to a Rockets game increases, then the demand for Rihanna tickets will remain unchanged.
D) The price of a ticket to a Rockets game will always equal the price of a ticket to a Rihanna concert.
Answer: B
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