Question: Which of these is NOT a characteristic of namedtuples?

1. You can assign a name to each of the `namedtuple` members and refer to them that way, similarly to how you would access keys in `dictionary`.
2. Each member of a namedtuple object can be indexed to directly, just like in a regular `tuple`.
3. `namedtuples` are just as memory efficient as regular `tuples`.
4. No import is needed to use `namedtuples` because they are available in the standard library.

Answer: The correct answer of the above question is Option D:No import is needed to use `namedtuples` because they are available in the standard library.