The equilibrium interest rate is determined by:
a. the aggregate demand and aggregate supply of the economy and occurs when people are.
b. the aggregate supply of the economy and occurs when people are willing to maintain the exact amount of money offered by the monetary authorities.
c. the aggregate demand of the economy and occurs when people are willing to maintain the exact amount of money offered by the monetary authorities.
d. the money demand and money supply of the economy and occurs when people are eager to maintain the exact amount of money offered by the monetary authorities.
e. none of the alternatives.