Question 7. [18 marks in total] For all questions use the following definition of class Node. public class Node { public int data; public Node next; 2 public Node data 0; null 6 next public Node ( int d) 10 data d; 11 null пеxt 12 13 14 public Node (int d, Node n) 15 data d; 16 next n 17 18 19 (6 marks) Draw a memory diagram to illustrate how the objects are linked after the following code is executed. Clearly show the contents of each object а. well as Node (25, nul1) Node (75,n1); Node (35, n2); new Node (85, n3.next.next); Node n1 new Node n2 new Node n3 new Node n4 n3.next.data 0 n2.next n3; 6