The Substitution Bias in the Consumer Price Index Refers to the

The substitution bias in the consumer price index refers to the

A) substitution by consumers of new goods for old goods.
B) substitution by consumers of a smaller number of high-quality goods for a larger number of low-quality goods.
C) fact that consumers substitute toward goods that have become relatively less expensive.
D) substitution of new prices for old prices in the CPI basket of goods and services from one year to the next.