A coin is released inside a lift at a height of 2m from the floor of the lift. The height of the lift is 10m. The lift is moving with an acceleration of 9 m/s2 downwards. The time after which the coin will strike with the lift is : (g = 10 m/s2)
(A) 4s
(B) 2s
(C) 4/√21s
(D) 2/√11s