If Most Shocks to the Economy Are ________ Shocks,then ________

If most shocks to the economy are ________ shocks,then ________.

A) aggregate demand;inflation stabilization policy will also stabilize activity in the short-run
B) permanent aggregate supply;inflation stabilization policy will also stabilize activity in the short-run
C) temporary aggregate supply;inflation stabilization policy has no impact on economic activity in the long-run
D) all of the above
E) none of the above