What is the imbalance at the node containing the item 25? (your answer should be an integer) What is the maximum imbalance of this tree? (vour answer should be an integer) Consider the following tree which resulted from an insertion into an existing AVL tree. The tree is shown after the insertion, but belore checking whether the insertion still has the AVL property. If we let the algorithm proceed trom this point, what item is in the first critical node encountered? What type of imbalunce is exhibited at the first critcal node encountered