Figure below is a balanced binary tree. If a node inserted as child of the node R, how many nodes will become unbalanced?

Figure below is a balanced binary tree. If a node inserted as child of

1.	Figure below is a balanced binary tree. If a node inserted as child of the node R, how many nodes will become unbalanced?
A.	2
B.	1
C.	3
D.	0
Answer» C.