What underlying factor causes the real GDP to be above the nominal GDP in early years of time series and below in the later years?

A) Decreasing price levels
B) Increasing price levels
C) Increases in average income
D) Decreases in the output of the economy

Real GDP

Gross Domestic Product adjusted for inflation, measuring the value of all goods and services produced by an economy in real terms.

Nominal GDP

The gross domestic product measured at current market prices, without adjusting for inflation.

Price Levels

The overall mean cost of the wide spectrum of goods and services in the economy.