Graphically derive short run Phillips curve with the help of aggregate demand and supply and demand

Assume our complete 4-panel model of the economy in equilibrium at Y-full employment.  If the Fed buys up government securities from the public, macroeconomists predict which one of the following? Group of answer choices a)In the long run there will be some inflation and aggregate output will eventually return to its full employment level. b)The short run aggregate demand curve shifts to the left and the short run aggregate supply curve shifts to the right. c)In the long run there will be some inflation and aggregate output will be permanently pushed above Y-full employment. d)The short run aggregate demand curve shifts to the right and the short run aggregate supply curve shifts to the right.

Imagine there is a Eurozone recession.

A. What assumptions did Thomas Sargent make when he claimed that inflation is always and everywhere a fiscal phenomenon?" B. Why is it appropriate in the book's short-term model for the author to use the Phillips Curve as an Aggregate Supply curve? Does it capture the working of the labor market as well as an AS curve based, say, on sticky wages? C. Provide an example of the book's short-run model being based on "microfoundations."