Which of the following four statments are true for real gases and the corrections that must be made to the Ide

Question

Which of the following four statments are true for real gases and the corrections that must be made to the Ideal Gas Law?
a) the constant a in van der waals equation corrects for attractions between particles
b) particles attract and repel each other
c) the volume of particles reduces observed pressure
d) the constant b in van der waals equation corrects for volume of real particles

Answer 1

I believe that all of these statements are true.