The figure in A is changed to give B. Which answer figure is related to C in the same way?

B is A shrunk to half its width and height (scale factor $\frac{1}{2}$) and moved into the top-right corner, with the dot shrinking and moving along with it. Doing the same to C gives a half-size yellow square with its diagonal and dot, sitting in the top-right corner: (b). (a) and (d) put it in the wrong corner, and (c) shrinks it to a quarter.