Each figure is the one before it turned about its centre through the same angle. Which figure comes next?

The arrow points up, then down-right, then left, then up-right: each time the whole picture turns $135^{\circ }$ (one and a half right angles) clockwise, with the circle and dot going round with it. Another $135^{\circ }$ turn takes the arrow from up-right to straight down, with the circle on the left and the dot at the top: (b). (a) turns only $45^{\circ }$, (c) is a mirror image and (d) turns $90^{\circ }$ backwards.