According to the image, p is directly proportional to 1V and inversely proportional to v, that is, PV=C, and c is constant;

According to Boyle's law, for a certain amount of gas, under the condition of constant temperature, pressure is inversely proportional to volume.

P is proportional to1v. When the gas mass and temperature are the same, the points corresponding to p and 1V in different states are on the same straight line.

When the gas mass is the same but the temperature is different or the gas temperature is the same but the mass is different, the points corresponding to gas P and 1V are not on the same straight line.

So AB is right and CD is wrong;

So choose ab.