A train running at the speed of 40 km/hr crosses a pole in 9 sec. What is the length of the train? Choose the correct choice from the following answers.
A) 100 m
B) 150 m
C) 187 m
D) 167 m
E) 197 m

Rationale: "speed = 40 * 5 / 18 = 100 / 9 m / sec length of the train = speed * time = 100 / 9 * 9 = 100 m answer : a"
Answer: A