Answer (Choose 1 answer)
Given a binary search tree T below. What is a result of breadth-first traverse of T after you delete by merging the node 3?
A. 6. 1, 8 2, 4, 7, 9
B. 6, 2, 8, 1, 4, 7, 9
C. 6 1 8 2 7, 9, 4
D. 6, 2, 1, 4, 8, 7, 9
6
3
8
1
4
7
9
2
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