In the process of metal rolling operation, along the arc of contact in the roll gap there is a point called the neutral point, because
(a) on one side of this point, the work material is in tension and on the other side, the work material is in compression
(b) on one side of this point, the work material has velocity greater than that of the roll and on the other side, it has velocity lesser than that of the roll
(c) on one side of this point, the work material has rough surface finish and on the other side, the work material has very fine finish
(d) at this point there is no increase in material width, but on either side of neutral point, the material width increases