Present worth explain the follow graph. Which of these two options is the best one? $7000 Do High 6000 5000 4000 3000 2000 IRR. = 4.3% high - low 1000 0 -1000 -2000 Do Low Do Nothing 10% IRR = 15% high 15% 0% 5% Interest Rate 20% IRR10 = 18% low Low Capacity - - High Capacity