

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 SB, and your holding is [King of Heart and Ten of Heart].
Before the flop, UTG raise 2.0 chips, SB raise 10.0 chips, and UTG call. Assume that all other players that is not mentioned folded.
The flop comes Four Of Spade, Four Of Heart, and Three Of Heart, then SB check, UTG bet 4 chips, and SB call.
The turn comes Nine Of Spade, then SB bet 17 chips, and UTG raise 38 chips.
You currently have One Pair(One Pair, Fours with King, Jack, Ten kickers).

Now it is your turn to make a move.
To remind you, the current pot size is 84.0 chips, and your holding is [King of Heart and Ten of Heart]. You currently have One 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: