In the tiny island nation of Bongo, the nation's wealth is broken down as follows: 50 percent is cash in checking and savings accounts, 25 percent is housing, and 25 percent is stock holdings. Last year, Bongo experienced an inflation rate of 24 percent, and housing prices and stock prices each increased by 11 percent. Real wealth in Bongo decreased last year. A change in real wealth helps explain the downward slope of the aggregate demand curve because the decline in real wealth leads to . (Check all that apply.) A. a decrease in consumption This is the correct answer. B. a decrease in investment C. a decrease in planned aggregate expenditure This is the correct answer. D. a decrease in savings