In each figure one shape is drawn inside another. Find the rule that changes A into B and use it on C.

The inner and outer shapes change places and each keeps its own colour: the small blue square becomes the big outer shape and the orange circle goes inside. So the red triangle becomes the outer shape, still pointing up, with the yellow pentagon inside it: (d). (a) swaps the shapes but not their colours, (b) swaps only the colours and (c) turns the triangle upside down.