PLEASE HELP!
△ABC is reflected to form ​​ ​ △A'B'C' ​.

The coordinates of point A are (−4, −3) , the coordinates of point B are ​ (−7, 1) ​, and the coordinates of point C are ​ (−1, −1) ​.

Which reflection results in the transformation of ​ △ABC ​​ to ​ △A'B'C' ​​?

A} reflection across the x-axis
B} reflection across the y-axis.
C} reflection across y = x.
D} reflection across , y, = , x, .