The ____ operation adds item to the tail of the list.

a.attend(item)

b.append(item)

c.insert(item, 0)

The running time for the ____ method is O(1) for both implementations (ArrayIndexedList and LinkedIndexedList).

Question options:

a.__str__

b.remove(index)

c.isEmpty()

The running time for the ____ method is O(n) for both implementations (ArrayIndexedList and LinkedIndexedList).

Question options:

a.__len()__

b.__getitem__(index)

c.remove(index)

If a collection provides support for a(n) ____, that collection can be traversed using a Python for loop.

Question options:

a.iterator

b.index

c.pointer