Figure: Shift of the Aggregate Demand Curve$1513.$png Refer to Figure: Shift of the Aggregate Demand Curve. A movement from point C on AD$2$ to point A on AD$1$ may have been the result of:Group of answer choicesa decrease in investment spending following pessimistic GDP forecasts.an increase in investment spending following optimistic GDP forecasts.decreases in the taxes paid by businesses.lower interest rates.