The specifications for the Sorted List ADT state that the item to be deleted is in the list. 1. Rewrite the specification for DeleteItem so that the list is unchanged if the item to be deleted is not in the list. 2. Implement DeleteItem as specified in (a) using an array-based implementation. 3. Implement DeleteItem as specified in (a) using a linked implementation. 4. Rewrite the specification for DeleteItem so that all copies of the item to be deleted are removed if they exist. 5. Implement DeleteItem as specified in (d) using an array-based implementation. 6. Implement DeleteItem as specified in (d) using a linked implementation.