Which of the following effects will make PV/nRT less than one for a real gas?

A) The gas molecules are large enough to occupy a substantial amount of space.
B) A large number of molecules have speeds greater than the average speed.
C) The gas molecules have a very low molar mass.
D) The gas molecules attract one another.
E) None of these.

I understand why choice D is right, but shouldn't choice A be correct as well because the size of the gas molecules would decrease the volume of the container and so make PV less than nRT?

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

Afraidsugar lol it’s the third one