The shapes that are rotations of X are B and C.
Which shapes are rotations of x?
Some things we need to remember about rotations:
The size of the figure does not change: Thenfigures like E and G can be discarded. E is a dilation and G is just smaller than x.
Also, a rotation does not change the orientation of the shape. So a figure like A is not a rotation, because the "horizontal part" is still down, but points to the other direction.
With this in mind, we can see that the rotations are:
B and C.