Identify all that we expect to be features of the ADT List? Determine the number of items in the list Add a new entry to the middle of the list Add a new entry to the end of the list Duplicates values are prohibited. Add a new entry to the beginning of the list n Java's ArrayList which of the following are true (check all that apply)? Both add() methods return a boolean. A sort() method is included in the interface indexOf() returns 1 if the specified item is not found. The method that returns the length of the ArrayList is getLength() Indexes for elements begin at 1 , not 0