Please help

Over the summer, the Kennesaw State University is improving some of its infrastructure. The first cost of grading and spreading gravel on the Busbee drive is expected to be $500,000. The road will have to be maintained at a cost of $15,000 per year. Even though the new road is not very smooth, it allows access to an area that previously could be reached only by walking. This improved accessibility has increased the property value along the road from $300,000 to $700,000. The conventional B/C ratio at a discount rate of 6% per year for a 10-year study period is closet to: 4.8 5.8 3.3 2.5