Which subnet mask would be used if $5$ host bits are available?

radio$\_$button$\_$unchecked

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

radio$\_$button$\_$unchecked

$255\mathrm{.}255\mathrm{.}255\mathrm{.}128$

radio$\_$button$\_$unchecked

$255\mathrm{.}255\mathrm{.}255\mathrm{.}224$

radio$\_$button$\_$unchecked

$255\mathrm{.}255\mathrm{.}255\mathrm{.}240$