

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 CO, and your holding is [King of Heart and Queen of Diamond].
Before the flop, CO raise 2.3 chips, and BTN call. Assume that all other players that is not mentioned folded.
The flop comes Ten Of Heart, Four Of Club, and Five Of Diamond, then CO bet 5 chips, and BTN call.
The turn comes King Of Diamond, then CO bet 12 chips, and BTN raise 38 chips.
You currently have Two Pair(Two Pair, Kings and Queens with Ten kicker).

Now it is your turn to make a move.
To remind you, the current pot size is 66.0 chips, and your holding is [King of Heart and Queen of Diamond]. 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: