Exhibit 17.6 A graph. Three lines are graphed on a coordinate plane. The horizontal axis is labeled Tons of discharge per day. The vertical axis is labeled Dollars per unit. The following values are displayed on the vertical axis, starting from the bottom: P and P prime. The first line is labeled S and is vertical, begins on the horizontal axis, goes up, and exits the top of the viewing window. The second line is labeled D and is downward sloping, begins on the vertical axis at a point above y = P prime, goes down and to the right, intersects the line S, and exits the bottom right of the viewing window. The third line is labeled D prime, is parallel to the line D, and downward sloping, begins on the vertical axis, above the line D, goes down and to the right, intersects the line S, and exits the bottom right of the viewing window, above the line D. Refer to Exhibit 17.6, which shows the market for pollution rights. The shift of the demand curve from D to D' indicates that ______ a. consumers want to buy technology that reduces pollution. b. consumers want to buy goods that use technology that does not pollute. c. consumers want producers to clean up the polluted river. d. producers want to discharge more pollutants into the river. e. producers want to use more of the river in a nonpolluting way