单选题：Insert 28, 23, 54, 61, 98, 37 into an initially empty AVL tree f

Insert 28, 23, 54, 61, 98, 37 into an initially empty AVL tree first. Then immediately insert one of the following keys. Which one will cause an RL rotation? @[D](2)

A. 10
B. 30
C. 60
D. 70




A.10
B.30
C.60
D.70


答案：D