11. (4 points) What is the time complexity to insert or remove an item in the middle of an ArrayLis 12. (4 points) Why? 13. (4 points) What is the average time complexity to add an item to the end of an ArrayList? 14. (4 points) What is the worst case time complexity to add an item to the end of an Array List? 15. (4 poinb) aking this al o ,ld an ArayList be the appropriate data structure for storing your data? Page 2 of 5 20 points