In what time will a train 110 m long cross an electric pole, it its speed be 128 km/hr?	Select the correct option.
A) 2.5 sec B) 2.9 sec C) 3.1 sec D) 8.7 sec E) 8.5 sec

Rationale: "speed = 128 * 5 / 18 = 36 m / sec time taken = 110 / 36 = 3.1 sec . answer : c"
Answer: C