Three plates of common surface area \[A\] are connected as shown. The effective capacitance will be

• A. \[\frac{{{\varepsilon }_{0}}A}{d}\]                    
• B. \[\frac{3{{\varepsilon }_{0}}A}{d}\]
• C. \[\frac{3}{2}\frac{{{\varepsilon }_{0}}A}{d}\]   
• D. \[\frac{2{{\varepsilon }_{0}}A}{d}\]