There is a line segment called AB (not pictured). The coordinates of point A are (6, 2), and the coordinates of point B are (2, 6). AB is transformed to form A'B', which is shown on the graph.

A graph with a line between points A begin ordered pair -6, 2 end ordered pair and B begin ordered pair -2, 6 end ordered pair

Which transformation below caused AB to transform into A'B'? Use graph paper to sketch the transformation if needed.

Question 6 options:

a reflection across the x-axis

a counter-clockwise 90 degree rotation about the origin

a reflection across the y-axis

a translation 3 units down and 7 units left