The most likely outcomes for a particular project are estimated as follows: Unit price: $ 70 Variable cost: $ 50 Fixed cost: $ 200,000 Expected sales: 35,000 units per year However, you recognize that some of these estimates are subject to error. Suppose that each variable may turn out to be either 10% higher or 10% lower than the initial estimate. The project will last for 10 years and requires an initial investment of $1.2 million, which will be depreciated straight-line over the project life to a final value of zero. The firms tax rate is 21% and the required rate of return is 12%. a. What is the NPV of the project in the best-case scenario, that is, assuming all variables take on the best possible value? b. What is the NPV of the project in the worst-case scenario?