The Following Graph Shows the Market for Pollution Rights

Multiple Choice

The following graph shows the market for pollution rights. The shift of the demand curve from D to D' indicates that ______.​ ​
Figure 17.4
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A) producers want to discharge more pollution into the river
B) producers want to use more of the river in a nonpolluting way​
C) consumers want producers to clean up the polluted river
D) consumers want to buy goods that use technology that does not pollute​
E) consumers want to buy technology that reduces pollution​