Which of the following claims concerning the importance of effects that explain the slope of theU.S.aggregate demand curve is correct?
A. The exchange-rate effect is relatively small because exports and imports are a small part of real GDP.
B. The interest-rate effect is relatively small because investment spending is not very responsive to interest rate changes.
C. The wealth effect is relatively large because money holdings are a significant portion of most households' wealth.
D. None of the above is correct.