Which statement is the best description of this structure?

[[0, 1, 2], [3, 4, 5], [6, 7, 8]]
It is one array consisting of numbers.
It is an array that consists of three other arrays.
It will not work in Python due to the double brackets
It will not work in Python due to the missing comma.

The best description of this structure is: It is an array that consists of three other arrays.