Which graph shows the image of the triangle below after it is reflected over the x-axis?
graphThe x-axis is between negative 4 and 4 with interval marks representing one unit, and the y-axis is between negative 5 and 5 with interval marks representing one unit. A triangle is drawn in red with vertices at left-parenthesis 1 comma 1 right-parenthesis, left-parenthesis 3 comma 1 right-parenthesis, and left-parenthesis 1 comma 3 right-parenthesis.
A. graph
B. graph
C. graph
D. graph