Figure shows an electric quadrupole, with quadruple moment \[(Q\text{ }=\text{ }2q{{\ell }^{2}}).\]The electric field at a distance from its center at the axis of the quadrupole is given by

• A. \[\left( \frac{1}{4\pi {{\in }_{0}}} \right)\frac{Q}{{{r}^{4}}}\]
• B. \[\left( \frac{1}{4\pi {{\in }_{0}}} \right)\frac{2Q}{{{r}^{4}}}\]
• C. \[\left( \frac{1}{4\pi {{\in }_{0}}} \right)\frac{3Q}{{{r}^{4}}}\] 
• D. None of these