If the altitude of an equilateral triangle is \[\sqrt{6}\,cm,\]its area is

• A.  \[2\sqrt{3}\,c{{m}^{2}}\]  
• B.  \[2\sqrt{2}\,c{{m}^{2}}\]
• C.  \[3\sqrt{3}\,c{{m}^{2}}\]              
• D.  \[6\sqrt{2}\,c{{m}^{2}}\]