

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 Spade and Queen of Club].
Before the flop, BTN raise 2.5 chips, SB raise 12.0 chips, and BTN call. Assume that all other players that is not mentioned folded.
The flop comes Ace Of Diamond, Nine Of Heart, and Eight Of Heart, then SB check, and BTN check.
The turn comes Three Of Spade, then SB bet 15 chips, and BTN raise 33 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 [King of Spade and Queen 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: