The most likely outcomes for a particular project are estimated as follows:

Unit Price $45

Unit Variable Cost $25

Fixed Cost $300,000

Expected Sales (Units) 28,000

However, you recognize that some of these estimates are subject to error. Suppose that each variable may turn out to be either 5% higher or 5% lower than the initial estimate. The project will last for 10 years and requires an initial investment of $1.1 million, which will be depreciated straight-line over the project life to a final value of zero. The firm's tax rate is 35%, and the required rate of return is 11%.

What is the project NPV in the best-case scenario, that is, assuming all variables take on the best possible value?

A) $122,016

B) $721,657

C) $681,462

D) None of the above

E) $680,521

Need to show work and have explanation for answer please!