Joe Kowalski Invents a New Product,and This New Product Becomes

Multiple Choice

Joe Kowalski invents a new product,and this new product becomes cheaper over time.This can be problematic because

A) the consumer price index (CPI) will include Joe's new product immediately if it is a consumer good,but as a consumer good,it will not be included in the gross domestic product (GDP) deflator.
B) the percent change in the consumer price index (CPI) will be distorted,but the change in the gross domestic product (GDP) deflator will not be,regardless of whether the product is a consumer good or a producer good.
C) it is unlikely the consumer price index (CPI) will include Joe's new product immediately,even if it is a consumer good.
D) money illusion will cause consumers to buy more of this good than the consumer price index (CPI) would otherwise reflect.
E) this good might be produced in a geographic location that is not included in the consumer price index (CPI) .