The first cost of grading and spreading gravel on a short rural road is expected to be $700,000. The road will have to be maintained at a cost of $25,000 per year. Even though the new road is not very smooth, it allows access to an area that previously could only be reached with off road vehicles. This improved accessibility has increased the property values along the road from $400,000 to $600,000. The conventional B/C ratio at an interest rate of 6% per year for a 10-year study period is closest to:

(a) 1.3

(b) 1.7

(c) 2.1

(d) 2.8