Containers \[A\] and \[B\] had \[15\ell \] and \[5\ell \] of water respectively. When an equal amount of water was poured into both containers, container \[A\] had twice the volume of water as container\[B\]. What was the least amount of water that was poured into each container?

• A. \[5\,\,m\ell \]                              
• B.                    \[5000\,\,m\ell \]            
• C.                    \[50\,\,m\ell \]                
• D.                    \[500\,\,m\ell \]