Deletion rules: we will use the same deletion rules as in the discussion guide When deleting a key in an internal node, use the SUCCESSOR as the replacement key When borrowing, try the RIGHT SIBLING first if one exists PART 1. Draw a 4-5 B-tree after each of the following insertion and deletion steps: Step 1. Insert the keys: 89, 34, 44, 41, 70, 81, 6, 69, 83, 77, 10, 37,3, 45, 23, 17, 95, 52, 99 Step 2. Delete the keys: 95, 81, 10 Step 3. Insert the keys: 84, 90, 39, 61