Ans: D
A is the image of reflecting the figure about the vertical line.
A is the image of reflecting the figure about the vertical line.
B is the image of rotating the figure clockwise about $O$ through $90^\circ$.
C is the image of rotating the figure anticlockwise about $O$ through $90^\circ$ and then reflecting about the vertical line.
D is the image of rotating the figure anticlockwise about $O$ through $90^\circ$.
