If a train, travelling at a speed of 90 kmph, crosses a pole in 5 sec, then the length of train is?  Options:
A) 135 m B) 125 m C) 129 m D) 120 m E) 165 m

Rationale: "explanation : d = 90 * 5 / 18 * 5 = 125 m answer : option b"
Answer: B