# The acceleration of a train between two stations 2 km apart is shown in the figure. The maximum speed of the train is

Question : The acceleration of a train between two stations 2 km apart is shown in the figure. The maximum speed of the train is

(A) $60ms^{-1}$

(B) $30ms^{-1}$

(c) $120ms^{-1}$

(D) $90ms^{-1}$