Which point lies below the x-axis?
A(1,-3) & (-1,-3)
B(1,-3) & (-1,3)
C(-1,3) & (-1,-3)
D(1,3) & (-1,-3)
A(1,-3) & (-1,-3)
B(1,-3) & (-1,3)
C(-1,3) & (-1,-3)
D(1,3) & (-1,-3)