What will this code fragment return?

import numpy as np
np.ones([1,2,3,4,5])

1.  It returns a 5×5 matric; each row will have the values 1,2,3,4,5.
2.  It returns an array with the values 1,2,3,4,5
3.  It returns five different square matrices filled with ones. The first is 1×1, the second 2×2, and so on to 5×5
4.  It returns a 5-dimensional array of size 1x2x3x4x5 filled with 1s.

Correct Answer:

•  It returns a 5-dimensional array of size 1x2x3x4x5 filled with 1s.