A tank with a small hole at the bottom has been filled with water and kerosene (specific gravity 0.8). The height of water is 3 m and that of kerosene 2 m. When the hole is opened the velocity of fluid coming out from it is nearly: (take g = 10 ms$$^{-2}$$ and density of water = $$10^3$$ kg m$$^{-3}$$)

A

10.7 ms$$^{-1}$$

B

9.6 ms$$^{-1}$$

C

8.5 ms$$^{-1}$$

D

7.6 ms$$^{-1}$$