What is the value of a after you run the following code?

a = np.arange(5)
a + 20

since we know that in the first line a is created as array([0,1,2,3,4])
if we try to add 20 to this then it would be array([20,21,22,23,24])
the options are given as follows

[20, 21, 22, 24, 24]

[0, 1, 2, 3, 4]

[25, 26, 27, 28, 29]

and the correct answer it showing is [0,1,2,3,4] . How come it would be correct ?