Deleting a node from a binary search tree node

A) is easiest when the node is the root.
B) is hardest when the node is a leaf.
C) is hardest when the node has one child.
D) is hardest when the node has two children.
E) None of the above

D) is hardest when the node has two children.

Computer Science & Information Technology

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Which of the following terms does NOT refer to a service that backs up computer files over the Internet on a scheduled basis and stores the files on its computers?

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