1. How many list objects are created by the code below?

>>> x = [5]

>>> y = x

>>> z = y+x

>>> x.append(10)

2. How many str objects are created by the code below?

>>> x = 'ab'

>>> y = x

>>> z = x

>>> z += 'c'

3. How many objects are created by the code below?

>>> lst_one = [1]

>>> lst_two = [2]

>>> lst_three = [lst_one, lst_two]