Which of the Following Statements Is Correct

Multiple Choice

Which of the following statements is correct?

A) In both the Keynesian and classical systems,aggregate demand is an important determinant of output and employment
B) In classical and monetarist models,money is the primary factor determining changes in aggregate demand.
C) Aggregate demand in the Keynesian model is determined entirely by the quantity of money,whereas in the classical model,money is one of several factors determining aggregate demand
D) None of the above