In what time will a train 100 meters long cross an electric pole, if its speed is 126 km/hr
Select.
A) 8.5 seconds  B) 2.86 seconds  C) 3.5 seconds  D) 2.5 seconds  E) 2.6 seconds

Rationale: "first convert speed into m / sec speed = 126 * ( 5 / 18 ) = 35 m / sec time = distance / speed = 100 / 35 = 2.86 seconds answer : b"
Answer: B