If node A has three siblings and B is parent of A, what is the degree of A?
(A) 0
(B) 3
(C) 4
(D) None of the above


Answer: (D)

Explanation: A has three siblings and B is parent of A, but no information is given about the children of A or if it is an internal node or a leaf node.
As the information given is insufficient to tell the degree of the A, Option (D) is correct.

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