In a stream, B lies in between A and C such that it is equidistant from both A and C. A boat can go from A to B and back in 6 h 30 minutes while it goes from A to C in 9 h. How long would it take to go from C to A?
- A. 3.75 h
- B. 4 h
- C. 4.25 h
- D. 4.5 h