The economy in the diagram below begins in long-run equilibrium at E0. Price Level FIGURE 31-2 60) Refer to Figure 312. At E0, the unemployment rate is 5.6 percent. Therefore, A) the sum of frictional and structural unemployment is 5.6 percent. B) the NAIRU is 5.6 percent. C) the economy is at full employment. D) cyclical unemployment is zero. E) all of the above