单选题：If there are 28 nodes in an AVL tree, then the maximum depth of

If there are 28 nodes in an AVL tree, then the maximum depth of the tree is \_\_\_\_. The depth of an empty tree is defined to be -1.
@[C](3)

A. 3
B. 4
C. 5
D. 6



A.3
B.4
C.5
D.6


答案：C