Math question from bmat

How can I solve this? Is it just that I need to redraw it or is there some kind of formula or technique to solve this?

rotating a point clockwise about the origin is changing (x;y) into (y;-x)
reflection on x is simply the mirror image of a point across the x axis
for point A (1;1)
rotation of 90° clockwise = (1;-1)
a reflection on x axis gives the point (1;1)
so option C) should be correct


I don’t get the reflection in the x axis part. I don’t get the whole thing really
edit: ok i get it now