After first, *middle, last = (10, 20, 30, 40), what are middle and its type?

After first, *middle, last = (10, 20, 30, 40), what are middle and its type?

1. (20, 30), a tuple
2. [20, 30], a list
3. 20, an integer
4. [10, 20, 30], a list