. In which tree, for every node the height of its left subtree and right subtree differ almost by one? A. Binary search tree B. AVL tree C. Threaded Binary Tree D. Complete Binary Tree Correct! Wrong! . What is Dequeue? A. Elements can be added from front B. Elements can be added to or removed from either the front or rear C. Elements can be added from rear D. None of the above Correct! Wrong!