HELP ME PLZ!!
Triangle ABCTriangle ABC is rotated to form ​ △A'B'C' ​.

The coordinates of point A are (1, 1) , the coordinates of point B are (3, 1) , and the coordinates of point C are (1, 4) .

Which counter clockwise rotation around the origin results in the transformation of ​ △ABC ​​ to ​ △A'B'C' ​?



Select from the drop down arrow to choose the correct rotation.

(a) rotation of 90

(b) rotation of 180

(c) rotation of 360