Use the Figure Below to Answer the Following Question(s)

Use the figure below to answer the following question(s) .
Figure 14-5
-In Figure 14-5, AD₁ and SRAS₁ indicate an economy initially operating at full-employment output level, Y₁. The short-run impact of the Fed unexpectedly shifting to a more restrictive monetary policy will be

A) a decrease in aggregate demand to AD₂ and a decrease in real output to Y₂.
B) a decrease in aggregate demand to AD₂ but real output would remain at Y₁.
C) a decrease in aggregate demand to AD₂ and an increase in short-run aggregate supply to SRAS₂, causing the price level to fall to P₃ and real output to remain unchanged at Y₁.
D) no change; AD and SRAS will stay at AD₁ and SRAS₁.