The flow-to-equity approach has been used by the firm to value their capital budgeting projects. The total investment cost at time 0 is $640,000. The company uses the flow-to-equity approach because they maintain a target debt to value ratio over project lives. The company has a debt to equity ratio of 0.5. The present value of the project including debt financing is $810,994. What is the relevant initial investment cost to use in determining the value of the project?

A. $170,994 B. $267,628 C. $372,372 D. $543,366 E. $640,000