Water $(\rho_1=1000 \, kg/m^3)$ and kerosene $(\rho_2=800 \, kg/m^3)$ are filled to the same height in two identical cylindrical vessels. Both vessels have small holes at their bottom. The speeds of the water and kerosene coming out of their holes are $v_1$ and $v_2$ respectively. Select the correct alternative.
- A$v_1 = v_2$
- B$v_1 = 0.8 v_2$
- C$0.8 v_1 = v_2$
- D$v_1 = \sqrt{0.8} v_2$
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