Which of the following is not a characteristic of a general linear list?
A. Insertions and deletions can be done anywhere in the list.
B. An empty linear list is identified by a null link pointer.
C. A linked list must always have a head pointer.
D. For programming efficiency, a linked list may have a last-node pointer.
E. One basic operation required to maintain a linear list is a search.
Answer: B
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