One Explanation as to Why Monetary Policy Did Not Have

One explanation as to why monetary policy did not have the intended effects on the economy during the Great Recession is that

A) part of the recession was caused by a rightward shift in aggregate supply.
B) monetary policy is ineffective in the short run.
C) the monetary policy conducted during the Great Recession was mostly unexpected.
D) part of the recession was caused by a leftward shift in aggregate supply.
E) focus was on fiscal policy during the Great Recession.