Anybody watching him on the news?

Can someone plz me and put everything in your own words

What is likely to happen if a new aggregate demand curve moves to the right? prices and output would drop, and the equilibrium point will stay the same. prices would rise, and output would drop in the short run. prices and output would rise, and the equilibrium point will change. prices would rise, and output would drop in the long run.

What should you adjust to make your hard hat fit properly