How many seconds will a train 100 meters long take to cross a bridge 150 meters long if the speed of the train is 63 kmph?  Choose the correct option:
A) 22 sec B) 77 sec C) 25 sec D) 14.3 sec E) 17 sec

Rationale: "d = 100 + 150 = 250 s = 63 * 5 / 18 = 17.5 mps t = 250 / 17.5 = 14.3 sec answer : d"
Answer: D