question 8: Based on the above tree graph, answer the following. 1. [0.5 point] List one internal vertex, 2. [0.5 point] List one leaf vertex. 3. [0.5 point] List one child vertex? 4. [0.5 point] Which vertex is the parent of k? 5. [0.5 point] List one sibling example? 6. [0.5 point] Which vertices are ancestors of k? 7. [0.5 point] Which vertices are descendants of b? 8. [0.5 point] Is this tree considered a balanced tree