Three plates\[A,\ B,\ C\]each of area \[50\,c{{m}^{2}}\] have separation \[3mm\] between \[A\]and \[B\] and \[3mm\] between \[B\] and \[C\]The energy stored when the plates are fully charged is [SCRA 1996]

• A.                    \[1.6\times {{10}^{-9}}J\]
• B.                    \[2.1\times {{10}^{-9}}J\]
• C.                    \[5\times {{10}^{-9}}J\]
• D.                    \[7\times {{10}^{-9}}J\]