B. Add one statement to the code to resolve the memory leak in reference counting.

C. Could this memory leak be avoided if the mark-sweep algorithm is used? Why?

4. The following Java code fragment creates some Node objects and later relinquishes its reference to the objects. class Node ( //Node class definition Node next; /I create Node objects Node p new Node(); p.next new Node); ?.next.next new Node(); p.next.next.next p; // other statements... // relinquish reference to the objects p null; (a) Explain why this code may cause a memory leak if the standard Reference Counting algorithm is used for garbage collection