Every coloured cell of grid A moves in the same way to give grid B. Move the cells of grid C by the same rule. Which grid do you get?

Each coloured cell moves one column to the right, and a cell already in the right-hand column comes back in on the left of the same row. In C the top-right cell goes to the top-left, the middle-left and centre cells move to the centre and middle-right, and the blue cell goes from the bottom-right to the bottom-left: (a). (c) moves every cell up a row instead, (b) turns the grid and (d) flips it upside down.