

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 Club and Jack of Spade].
Before the flop, CO raise 2.3 chips, BTN raise 7.5 chips, and CO call. Assume that all other players that is not mentioned folded.
The flop comes Jack Of Heart, Four Of Heart, and Five Of Spade, then CO check, BTN bet 3 chips, and CO call.
The turn comes King Of Heart, then CO check, BTN bet 13 chips, and CO raise 29 chips.
You currently have Two Pair(Two Pair, Kings and Jacks with Eight kicker).

Now it is your turn to make a move.
To remind you, the current pot size is 64.0 chips, and your holding is [King of Club and Jack of Spade]. 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: