Question: What makes A * search optimal? Select one: If its heuristic is admissible. If it explores all possible paths. If its heuristic is inadmissible. If

What makes A* search optimal?
Select one:
If its heuristic is admissible.
If it explores all possible paths.
If its heuristic is inadmissible.
If its heuristic is consistent.
If it always selects the shortest path first.

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