

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 [Eight of Diamond and Eight of Club].
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 Spade, King Of Club, and Ace Of Heart, then CO check, BTN bet 5 chips, and CO call.
The turn comes Two Of Diamond, then CO check, BTN bet 12 chips, and CO call.
The river comes Three Of Club, then CO bet 20 chips.


Now it is your turn to make a move.
To remind you, the current pot size is 55.0 chips, and your holding is [Eight of Diamond and Eight of Club].

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: