4. A federal highway project is expected to have a first cost of $5 million and an annual maintenance cost of $200,000. Shoulder replacement costs of $1,000,000 will be required in 10 years. Benefits to the road-users are expected to be $800,000 per year. If the project will have a 20 year life, please calculate the modified B/C ratio. Is the public project worth undertaking? Why (not)