As you know, CPI is a measure of inflation that is most commonly used in economics. However, Case-Shiller index is also used to measure the price level of our economy nowadays. Why? a. Because Case-Shiller index reflects in housing price as well as the basket price. b. Because Case-Shiller index is easier to survey for inflation. c. Because CPI is not correct measure for inflation. d. Because CPI does not reflect in asset price such as housing price.