Helicopter Gear is planning to expand its product line, which requires investment of $477,000 in special-purpose machinery. The machinery has a useful life of six years and no salvage value. The estimated annual results of offering the new products are as follows: Revenue $ 529,500 Expenses (including straight-line depreciation) (502,800) Increase in net income $ 26,700 All revenue from the new products and all expenses (except depreciation will be received or paid in cash in the same period as recognized for accounting purposes. What is the net present value of this proposed investment, using a discount rate of 11%? (Note: An annuity table shows that the present value of $1 received annually for six years, discounted at 11%, is 4.231.) a. $449,332 b. ($106,200) c. ($27,668) d. $370,800