

You are a specialist in playing 6-handed No Limit Texas Holdem. The following will be a game scenario and you need to make the optimal decision.

Here is a game summary:

The small blind is 0.5 chips and the big blind is 1 chips. Everyone started with 100 chips.
The player positions involved in this game are UTG, HJ, CO, BTN, SB, BB.
In this hand, your position is BTN, and your holding is [King of Diamond and Eight of Club].
Before the flop, BTN raise 2.5 chips, and BB call. Assume that all other players that is not mentioned folded.
The flop comes Queen Of Club, Ace Of Diamond, and King Of Heart, then BB check, and BTN check.
The turn comes Ten Of Spade, then BB bet 6 chips, BTN raise 17 chips, and BB call.
The river comes Ace Of Club, then BB check.
You currently have Two Pair(Two Pair, Aces and Kings with Queen kicker).

Now it is your turn to make a move.
To remind you, the current pot size is 39.0 chips, and your holding is [King of Diamond and Eight of Club]. You currently have Two Pair.

Decide on an action based on the strength of your hand on this board, your position, and actions before you. Do not explain your answer.
Your optimal action is: