Question

The keys 45, 20, 60, 10, 30, 55, 70, 25 are inserted in this order into an initially empty Binary Search Tree. What is the postorder traversal of the resulting tree?

A 10 20 25 30 45 55 60 70
B 45 20 10 30 25 60 55 70
C 10 25 20 30 55 70 60 45
D 10 25 30 20 55 70 60 45
E 25 10 30 20 55 60 70 45
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