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?