Three things change in this series: the arrow in the centre, the dot and the shaded corner cell. Which grid comes next?

The arrow turns $45^{\circ }$ clockwise each step, the dot moves one outer cell clockwise, and the orange cell jumps one corner anticlockwise. Next: arrow pointing down, dot in the bottom-middle cell, orange cell back in the top-left corner: (b). (a) moves the orange cell clockwise, (c) turns the arrow too far and (d) moves the dot two cells.