Suppose the Federal Reserve increases the inflation target. Suppose further that inflation expectations are very sticky and well-anchored around the original target of the Fed. Which of the following scenarios could hold trueshortlyafter the Fed increases the inflation target?

a) The AD shift upwards and the AS does not shift .

b) The AD shifts upwards, but the AS shifts downwards.

c) The AD shifts downwards, but the AS shifts upwards.

d) Both the AS and AD shift downwards.