Referring to the diagram below, the type of sensitivity analysis performed in this example is consistent with Sales price Units sold NPV of a project $450,000 $400,000 $350,000 $300,000 $250,000 $200,000 $750,000 $100,000 $50,000 Fixed costs Variable costs $0 + 10% 15% -5% -$50.000 % change in input variable Select one: o a. changing multiple variables at the same time. O b. changing one variable at a time. o c performing a Monte Carlo simulation. d. developing optimistic and pessimistic scenarios, O timtad net nresent worth