

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 [Ace of Heart and King of Spade].
Before the flop, CO raise 2.3 chips, and BTN call. Assume that all other players that is not mentioned folded.
The flop comes Five Of Club, Two Of Diamond, and Three Of Heart, then CO check, and BTN check.
The turn comes Ace Of Diamond, then CO bet 5 chips, BTN raise 16 chips, and CO call.
The river comes Ten Of Diamond, then CO bet 19 chips, and BTN raise 81 chips.
You currently have One Pair(One Pair, Aces with King, Ten, Five kickers).

Now it is your turn to make a move.
To remind you, the current pot size is 138.0 chips, and your holding is [Ace of Heart and King of Spade]. 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: