Why will this query generate an error?

SELECT employee$\_$id$,$ salary

FROM employees INNER JOIN salaries ON employee$\_$id

$=$ employee$\_$id

WHERE salary $>=75000$;

Group of answer choices

The join predicate's 'employee$\_$id$\text{'}$eld is ambiguous.

$>=$ is not a valid operator.

No employees with a salary greater than or equal to $75000$ exist in the database.

The above query will not return an error.