

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 HJ, and your holding is [Ace of Spade and King of Diamond].
Before the flop, UTG raise 2.0 chips, HJ raise 6.5 chips, and UTG call. Assume that all other players that is not mentioned folded.
The flop comes Nine Of Spade, Seven Of Spade, and Four Of Club, then UTG bet 7 chips, HJ raise 16 chips, and UTG call.
The turn comes Six Of Spade, then UTG check, HJ bet 28 chips, and UTG raise 77 chips.
You currently have High Card(A-high).

Now it is your turn to make a move.
To remind you, the current pot size is 151.0 chips, and your holding is [Ace of Spade and King of Diamond]. You currently have High Card.

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: