public class Student private Student next; private String name, id; public Student (String n, String i) name n: next-null: public void setNext (Student s) next = 3 ; | public Student getNext ) return next public class LinkList private Student first; public LinkList O firstnull: public boolean isEmpty //returns true if the list is empty, false if it has at least one element public void push (Student s)t //inserts the element in the front of the list This partial class definition can be used to implement a Linked List of Student object. Which of the following code snippets would properly complete method isEmpty, which should return true is the list contains no objects