In Which of the Following Situations Will an Individual's Purchasing

Multiple Choice

In which of the following situations will an individual's purchasing power be unaffected?

A) money income is cut in half and the prices of all goods and services fall by 50%
B) money income falls and the price of one good falls
C) money income doubles and the prices of all goods and services are cut in half
D) money income doubles and the prices of all goods and services remain constant
E) money income is cut in half and prices of all goods and services remain constant