Which of the Following Statements Is (Are)correct? There Is Agreement

Multiple Choice

Which of the following statements is (are) correct? There is agreement between the Keynesians and monetarists that

A) an increase in aggregate demand will increase both output and price in the short run.
B) there is a trade-off between inflation and unemployment in the short run.
C) in the long run,when the expected price level also has time to adjust,output will not be affected by changes in aggregate demand.
D) All of the above
E) None of the above