The matrix product AB = O, where O represent null matrix, then ______?

A is null matrix

A = O or B = O

A = 0 and B = O

All of these

If AB = O (null matrix), it is possible that either A = O (null matrix) or B = O (null matrix), or both could be null matrices.

In matrix multiplication, if either matrix is a null matrix, the result will always be a null matrix.