What is output by the following code? (2 points)

ArrayList < Integer > a = new ArrayList < Integer >(); ArrayList b = a; a.add(4); b.add(5); a.add(6); b.add(7); System.out.println(a.get(1));

Question 6 options:

1)	An IndexOutOfBoundsException occurs.

2)

4

3)

5

4)

6

5)

7