Two charges of \[4\mu C\] each are placed at the corners A and B of an equilateral triangle of side length 0.2 m in air. The electric potential at C is \[\left[ \frac{1}{4\pi {{\varepsilon }_{0}}}=9\times {{10}^{9}}\frac{N\text{-}{{m}^{2}}}{{{C}^{2}}} \right]\] [EAMCET (Med.) 2000]

• A.            \[9\times {{10}^{4}}\]V
• B.                                      \[18\times {{10}^{4}}\]V
• C.            \[36\times {{10}^{4}}\]V
• D.                                      \[36\times {{10}^{-4}}\]V