Consider the Van Der Waals "B" Coefficient for He, O₂

Consider the van der Waals "b" coefficient for He, O₂ and CO₂ increases because

A) the number of different atoms increases.
B) the intermolecular forces acting between molecules increases.
C) the strength of chemical bonds increases.
D) the volume occupied by the molecules becomes more significant as the size of the molecule increases.
E) the mass of the molecules increases.