单选题：下列哪个插入顺序可以得到这棵AVL树

下列哪个插入顺序可以得到这棵AVL树 @[A](2)


A. 6, 15, 3, 5, 4, 1
B. 15, 6, 3, 5, 4, 1
C. 6, 15, 5, 3, 1, 4
D. 6, 15, 3, 5, 1, 4





A.6, 15, 3, 5, 4, 1
B.15, 6, 3, 5, 4, 1
C.6, 15, 5, 3, 1, 4
D.6, 15, 3, 5, 1, 4


答案：A