If a train, travelling at a speed of 180 kmph, crosses a pole in 5 sec, then the length of train is? Choose the correct choice:
A) 250 m  B) 112 m  C) 117 m  D) 125 m  E) 123 m

Rationale: "a a = 180 * 5 / 18 * 5 = 250 m"
Answer: A