In the linked list implementation of the queue, it was not necessary to set the pointer in the last node of the queue to NULL because:

A. we never had to search for an element in the queue
B. the address stored in the back pointer gives the address of the last node
C. it is never necessary to set a pointer in the last node of a linked list to NULL
D. the last node in the queue is not necessarily the last node in the linked list


B

Computer Science & Information Technology

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