When Using a Node Pointer to Traverse a Linked List

Multiple Choice

When using a node pointer to traverse a linked list, we know we have reached the end of a list when

A) we encounter the new line character '\n'.
B) we encounter a successor pointer value of NULL in the current node.
C) we arrive back at the beginning of the list.
D) we encounter a sentinel, usually 9999.
E) None of the above