rotation 90° counterclockwise about the origin

What are the coordinates of F' (the image of F).
A. (1, 4)
B. (4, 1)
C. (-4, -1)
D. (-1, -4)

rotation 90 counterclockwise about the origin What are the coordinates of F the image of F A 1 4 B 4 1 C 4 1 D 1 4 class=