Multiple Choice
Figure 4-9
-Refer to Figure 4-9.The graphs show the demand for cigarettes.In Panel (a) ,the arrows are consistent with which of the following events?
A) Tobacco and marijuana are complements,and the price of marijuana decreased.
B) Tobacco is a "gateway drug," and the price of marijuana increased.
C) The price of cigarettes increased.
D) The arrows are consistent with all of these events.
Correct Answer:
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