On a map the distance between two mountains is 312 inches. The actual distance between the mountains is 140 km. Ram is camped at a location that on the map is 34 inch from the base of the mountain. How many km is he from the base of the mountain?  Select.
A) 14.83 B) 14.81 C) 14.8 D) 15.25 E) 14.12

Rationale: "explanation : since 312 inch = 140 km so 1 inch = 140 / 312 km so 34 inch = ( 140 ã — 34 ) / 312 = 15.25 km answer : d"
Answer: D