Figure 34-2

Multiple Choice

Figure 34-2.On the left-hand graph,MS represents the supply of money and MD represents the demand for money;on the right-hand graph,AD represents aggregate demand.The usual quantities are measured along the axes of both graphs.
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-Refer to Figure 34-2.If the graphs apply to an economy such as the U.S.economy,then the slope of the AD curve is primarily attributable to the

A) wealth effect.
B) interest-rate effect.
C) exchange-rate effect.
D) Fisher effect.