### AVL Tree Operations: Removal and Preorder Traversal#### Consider the following AVL tree:``` 42 / \ 13 77 / \ / \ 12 16 61 99 / / \ 4 19 44```#### Task:Write the contents of the binary tree in a preorder traversal after removing each of the following elements:- 13- 42- 99Include a comma and space between each pair of numbers written (the same format as the input listed above is in).#### Procedure:**1. Removal of 13:** - When 13 is removed, the AVL tree undergoes rebalancing to maintain its properties. **2. Removal of 42:** - When 42 is removed, the AVL tree undergoes rebalancing to maintain its properties. **3. Removal of 99:** - When 99 is removed, the AVL tree undergoes rebalancing to maintain its properties.#### Preorder Traversal:Preorder traversal visits nodes in the order: Root, Left Subtree, Right Subtree.Ensure to re-evaluate the AVL tree structure after each removal and perform the preorder traversal for each scenario.

An AVL tree is a self-balancing binary search tree that maintains a balance factor for each node in…

Answered: Consider the following AVL tree: 4 12…

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