Three things change about the square at each step: its size, the way it stands and its colour. Which answer figure comes next?

The square gets smaller each time, turns through $45^{\circ }$ (so it alternates between standing flat and standing on a corner) and its colour follows orange, blue, yellow, orange. Next it is smaller again, standing flat, and blue: (d). (a) has the wrong colour, (b) stands on a corner and (c) is not smaller.