A 1.5m tall girl standing at a distance of 15m from a fence of 5m high throws a stone of 0.25 kg at an angle of 45 degrees to the horizontal. The minimum velocity of the stone to be thrown to fly over the fence is (A) 9.8 m/s. (B) 10.2 m/s. (C) 13.8 m/s. (D) 19.6 m/s
