Which of the following is the wildcard $($inverse$)$ version of a $/27$ mask?

$0\mathrm{.}0\mathrm{.}0\mathrm{.}27$

$0\mathrm{.}0\mathrm{.}0\mathrm{.}31$

$0\mathrm{.}0\mathrm{.}31\mathrm{.}255$

$0\mathrm{.}0\mathrm{.}0\mathrm{.}7$