7 Consider this binary tree. (a) List the descendants of node 8. (b) List the ancestors of 1 (c) List the leaf nodes. (d) List the internal nodes. (e) What are the levels of nodes 3, 1 and 9? (f) What is the height of the tree? (g) What is the height of the subtree rooted at 6? (h) Is this a full binary tree? Explain(i) Explain how we could transform this tree to be a complete binary tree, i.e., state which nodes we would move and where we would move them to. 8 4 2 9