In what time will a train 180 meters long cross an electric pole, if its speed is 154 km/hr
Choose the correct choice:
A) 5 seconds	B) 4.3 seconds	C) 3 seconds	D) 2.5 seconds	E) none of these

Rationale: "explanation : first convert speed into m / sec speed = 154 * ( 5 / 18 ) = 42 m / sec time = distance / speed = 180 / 42 = 4.3 seconds option b"
Answer: B