Need help, thanks

[buurin123]

1. This was my quiz and I need help to understand why the correct answer is A? I chose B

The output of the following code is:
X=np.random.random((10,3))
Xmean=X.mean(axis=0)

A. Generate a 10X3 array and get the means of the columns


B. Generate a 10X3 array and get the means of the rows


C. Generate a 3X10 array and get the means of the columns


D. Generate a 3X10 array and get the means of the rows

2. Changing the values in a slice of an array will change the underlying array.

A. True


B. False

I chose False but correct answer is True. Is A correct answer?

Thank you