When the economy is at an equilibrium with real GDP, what does this typically signify about the relationship between aggregate supply and aggregate demand?
A) Aggregate supply is greater than aggregate demand, leading to inflation.
B) Aggregate demand is greater than aggregate supply, leading to a recession.
C) Aggregate supply equals aggregate demand, meaning there is no tendency for the overall level of output to change.
D) Aggregate supply and aggregate demand are completely unrelated.