Question: The Top ( frontier ) function: Select one: Returns the top node in the frontier. Removes the last node inserted into the frontier. Removes the

The Top(frontier) function:
Select one:
Returns the top node in the frontier.
Removes the last node inserted into the frontier.
Removes the top node in the frontier and returns it.
Removes the top node in the frontier.
Does not return anything if there are sill nodes in the frontier

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