Which of the following is an example of a valid IPv$6$ address?

FEDC.BA$98\mathrm{.}7654\mathrm{.}3210\mathrm{.}0800$:$200$C$\mathrm{.}00$CF$\mathrm{.}1234\mathrm{.}56$AG$\mathrm{.}9512$

$192\mathrm{.}168\mathrm{.}94\mathrm{.}82/$v$6$

$97\mathrm{.}169\mathrm{.}94\mathrm{.}82$:$1234$

$2001$::$3210$:$0900$:BA$98$:$200$C:CF