Simplify: ${\left({\left({\left(625\right)}^{-1/2}\right)}^{-1/4}\right)}^2$

The correct option is B 5

${\left({\left({\left(625\right)}^{-1/2}\right)}^{-1/4}\right)}^2$ $\Rightarrow$ ${\left(625\right)}^{\frac{-1}{2}\times \frac{-1}{4}\times 2}$

$\Rightarrow$ $(625{)}^{\frac{1}{4}}$

$\Rightarrow$ $\sqrt[4]{4625}$

$\Rightarrow$ $5$

$\therefore$ ${\left({\left({\left(625\right)}^{-1/2}\right)}^{-1/4}\right)}^2=5$