From March 2011 to March 2021, the Standard & Poor's Index of 500 stock prices increased by 400 percent, while the consumer price index increased by 18 percent. Part 2 These changes would have caused A. a decrease in the real value of household wealth, which shifted the aggregate demand curve to the left. B. a decrease in the real value of household wealth, which shifted the aggregate demand curve to the right. C. an increase in the real value of household wealth, which shifted the aggregate demand curve to the left. D. an increase in the real value of household wealth, which shifted the aggregate demand curve to the right