Please do the question C and E, that's where I keep getting wrong answer, just leave other question alone if it takes too much time, but please do the C and E, really appreciate that! thank you

Superfast Bikes is thinking of developing a new composite road bike. Development will take six years and the cost is $196 400 per year. Once in production, the bike is expected to make $286 087 per year for 10 years. The cash inflows begin at the end of year 7 Assuming the cost of capital is 9.3% a. Calculate the NPV of this investment opportunity. Should the company make the investment? b. Calculate the IRR and use it to determine the maximum deviation allowable in the cost of capital estimate to leave the decision unchanged. c. How long must development last to change the decision? Assume the cost of capital is 14.1%. d. Calculate the NPV of this investment opportunity. Should the company make the investment? e. How much must this cost of capital estimate deviate to change the decision? f. How long must development last to change the decision? a. If the cost of capital is 9.3%, the NPV is $ (Round to the nearest dollar.)