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) all absolute prices fall by 15% and money income falls by 15%
B) all relative prices fall by 15% and money income falls by 15%
C) all relative prices rise by 15% and money income falls by 15%
D) all absolute prices remain constant and money income falls by 15%
E) all relative prices remain constant and money income rises by 15%