A train running at the speed of 54 km/hr crosses a pole in 9 seconds. What is the length of the train?  Select the correct option.
A) 135
B) 278
C) 255
D) 150
E) 287

Rationale: "speed = ( 54 * 5 / 18 ) m / sec = ( 15 ) m / sec length of the train = ( speed x time ) = ( 15 * 9 ) m = 135 m . answer : a"
Answer: A