单选题：Which one of the following statement is FALSE about a tree?
Which one of the following statement is FALSE about a tree?
A.A nonempty tree must have a root, which has zero or more nonempty subtrees.
B.The degree of a tree is equal to the height of the tree.
C.Sibling nodes share the same parent.
D.When converting a tree into a binary tree using FirstChild-NextSibling representation, the root of the binary tree must be of degree 1.
答案：B
A.A nonempty tree must have a root, which has zero or more nonempty subtrees.
B.The degree of a tree is equal to the height of the tree.
C.Sibling nodes share the same parent.
D.When converting a tree into a binary tree using FirstChild-NextSibling representation, the root of the binary tree must be of degree 1.
答案：B
