One group member will plot a torus with two circles on it.
This is a torus with two circles on it where the radius from the center of the torus to the center of the tube is , and the radius of the tube is .
As a gesture of friendship, I will tell you that the parametric formula for a torus of radius is:
where is the radius from the center of the torus to the center of the tube, and is the radius of the tube.
You may color you circles any color you like—though you must make them different colors.