1.

For a tree with just one node, the root node, the height of a binary tree is defined to be zero; if there are 2 levels of nodes, the height is 1 and so on. Binary search tree is built according to the usual rules with the following six keys, inserted one at a time given:B, I, N, A, R, Y. what is the height of the tree?

A. 2
B. 4
C. 3
D. 5
Answer» C. 3


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