Two communicating vessels contain mercury. The diameter of one vessel is n times larger than the diameter of the other. A column of water of height h is poured into the left vessel. The mercury level will rise in the right-hand vessel (s = relative density of mercury and \[\rho \] = density of water) by

• A.             \[\frac{{{n}^{2}}h}{{{(n+1)}^{2}}s}\]                                       
• B.             \[\frac{h}{({{n}^{2}}+1)\,s}\]
• C.             \[\frac{h}{{{(n+1)}^{2}}s}\]     
• D.             \[\frac{h}{{{n}^{2}}s}\]