Choose the correct AVL tree using the information below. Insert in order: 0 5 3 4 9 2 15 Then delete 4 After that Insert 4

After three records with keys 40, 15, and 18 are inserted into an empty AVL tree, which of the following is correct?   Question options:   A. a single left rotation is needed at node 18   B. no rotation is needed to maintian AVL tree   C. a single right rotation is needed at node 40   D. a single left rotation is needed at node 15

Draw the 2-3-4 tree showing each value inserted using the following insertion sequence: 85,  42,  73,  51,  40,  24,  93,  68,  34,  20 2. Given the following 2-3 tree, shows all steps to delete the values in the following sequence: 40,  63,  51, 23, 88 BOX IN YOUR FINAL 2-3 tree.

After three records with keys 40, 18, and 15 are inserted into an empty AVL tree, which of the following is correct?   Question 5 options:   no rotation is needed to maintian AVL tree   a single right rotation is needed at node 40   a single left rotation is needed at node 18   a single left rotation is needed at node 15