Concept:Real income depends on the purchasing power of nominal income.
Explanation:Nominal income is the amount of money earned.
Real income is what that money can actually buy.
When nominal income increases but prices do not change, the same income now buys more goods and services.
This means the consumer’s purchasing power rises.
Therefore, real income increases.
The change does not directly increase GDP or GNP, because those measure national output and earnings, not individual purchasing power.
Answer:A. increased real income