Given the following integer elements:

138, 21, 10, 96, 209, 107, 64, 32, 75, 53, 19

a) Draw the AVL tree that results when the above elements are added (in the given order) to an empty AVL

tree.

b) Draw the AVL tree from part (a) after all of the following elements are removed.

19, 53, 96, 138, 21

PLEASE explain step by step