They are one and the same thing
their cross product will yield a vector perpendicular to the plane which is same...
Its CAxCB = ABxAC = 2j + 2b
......
As Adarsh said, both cross products will give the same plane- - they are vectors pointing in opposite directions and so perpendicular to the same plane.
But please don't say "C is perpendicular to A and B". A, B, and C are points, not lines or vectors and so are not perpendicular to anything.