A swimmer swins in still water at a speed `=5 km//hr`. He enters a `200m` wide river, having river flow speed `=4km//hr` at point `A` and proceeds to swim at an angle of `127^(@) (sin 37^(@) = 0.6)` with the river flow direction. Another point `B` is located directly across `A` on the other side. the swimmer lands on the other bank at a point `C`, form which he walks the distance `CB` with a speed `= 3km//hr`. The total time in which he reaces from `A` to `B` is
A. 5 minutes
B. 4 minutes
C. 3 minutes
D. None
