Find the closet little $\text{'}$o$\text{'}$ complexity value for the expression $(1+1/4+1/16+1/32+.....)*$ n$2$

Group of answer choices

o$($n$2\mathrm{.}01)$

o$($n$2)$

o$($n$2\mathrm{.}99)$

$\backslash$infty