If $(4+\sqrt{7})$ is presented in the form of perfect square it will be equal to :
[A] $\left ( 2+\sqrt{7} \right )^{2}$
[B] $\left ( \sqrt{3}+\sqrt{4} \right )^{2}$
[C] $\left [ \frac{\sqrt{7}}{2}+\frac{1}{2} \right ]^{2}$
[D] $\left \{ \frac{1}{\sqrt{2}}(\sqrt{7}+1) \right \}^{2}$