The Ideal Gas Model Assumes That Molecules Have Infinitesimal Size $P$

Multiple Choice

The ideal gas model assumes that molecules have infinitesimal size. Consider one molecule bouncing around in the container. As the molecule's size increases relative to the size of the container, how will the average pressure $P$ that it exerts change, other things being held constant?

A) $\boldsymbol{P}$ increases.
B) $P$ does not change.
C) $P$ decreases.
D) One does not have enough information to say.