

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 [Ace of Heart and King of Diamond].
Before the flop, SB raise 3.0 chips, and BB call. Assume that all other players that is not mentioned folded.
The flop comes Eight Of Heart, Eight Of Club, and Ten Of Club, then SB check, and BB check.
The turn comes Ace Of Spade, then SB check, BB bet 8 chips, and SB call.
The river comes Four Of Diamond, then SB bet 11 chips, and BB raise 40 chips.


Now it is your turn to make a move.
To remind you, the current pot size is 73.0 chips, and your holding is [Ace of Heart and King of Diamond].

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: