Suppose you have two tables in a university database system: enrolled$\_$students which contains the IDs of all currently enrolled students, and graduated$\_$students which contains the IDs of all students who have graduated. You want to create a list of all unique student IDs, whether they are currently enrolled or have already graduated.

Which of the following SQL queries correctly combines the student IDs from both tables without any duplicates?

Group of answer choices

SELECT student$\_$id FROM enrolled$\_$students UNION SELECT student$\_$id FROM graduated$\_$students;

SELECT student$\_$id FROM enrolled$\_$students UNION ALL SELECT student$\_$id FROM graduated$\_$students;

SELECT student$\_$id FROM enrolled$\_$students INTERSECT SELECT student$\_$id FROM graduated$\_$students;

SELECT student$\_$id FROM enrolled$\_$students EXCEPT SELECT student$\_$id FROM graduated$\_$students;