Please Answer this question

Figure 2 shows the aggregate demand ! aggregate suppl'glr model. a} label the three curves that are shown here { AB. and C]. b} Describe the equilibrium situation that is depicted by the dot at the intersection of curves A and B. c] Indicate the process by which we might get to the intersection of curves D [the dashed line} and C. d] Indicate the process by which we might get to the intersection of curves E {the dash-dot line] and C