In what time will a train 200 meters long cross an electric pole, if its speed is 128 km/hr Choose the most appropriate option
A) 5 seconds
B) 5.7 seconds
C) 3 seconds
D) 2.5 seconds
E) none of these

Rationale: "explanation : first convert speed into m / sec speed = 128 * ( 5 / 18 ) = 35 m / sec time = distance / speed = 200 / 35 = 5.7 seconds option b"
Answer: B