If Nominal National Income Increased by 20% Over a Certain

Multiple Choice

If nominal national income increased by 20% over a certain period of time while real national income increased by 10%,then

A) everybody in the economy became worse off.
B) inflation has decreased during this time period.
C) the labour force increased by 10%.
D) the price level has declined by about 10%.
E) the price level has increased by approximately 10%.