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a State true or false Statement Tree is a non linear data structure.1 2. A singly linked list or single-linked list is a concrete data structure consisting of a sequence of nodes. 3. The type of all elements in an array must be same. Linked list is used to store fixed size of data. 4 5. In a binary tree, a node may have a degree greater than 2 6. Undo changes on your word document one application of stack. 7. The efficiency of any algorithmic solution to a problem is a measure of the time efficiency and space efficiency 8. The following tree is AVL trec 12 18 11 17