A non-viscous liquid is flowing through a horizontal pipe as shown in the figure. Three tubes $\mathrm{A}$, $\mathrm{B}$ and $\mathrm{C}$ are connected to the pipe. The radii of the tubes $\mathrm{A}$, $\mathrm{B}$ and $\mathrm{C}$ at the junction are $2\mathrm{ }\mathrm{c}\mathrm{m}$, $1\mathrm{ }\mathrm{cm}$ and $2 \mathrm{c}\mathrm{m}$ respectively. It can be said that the