A train of 150 m length is going towards north direction at a speed of 10 m/s. A parrot flies at a speed of 5 m/s towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to: (A) 12 s (B) 15 s (C) 8 s (D) 10 sâ–ºCorrect Option Correct Option is: D