Suppose the Economy Is Initially in Equilibrium at Point a in the Figure

Suppose the economy is initially in equilibrium at point A in the figure below.A decrease in investment expenditures causes the AD curve to shift back to AD₂.Under these circumstances,which of the following statements is true?

A) If the countercyclical fiscal policy is made at the correct time,the AD curve will shift to AD₄.
B) If there is no countercyclical fiscal policy,the AD curve will shift to AD₄.
C) If there is no countercyclical fiscal policy,the AD curve will shift back to AD₁.
D) If the countercyclical fiscal policy is timely enough,the AD curve will shift to AD₃.
E) If there is no countercyclical fiscal policy,the IA line will shift up.