If Drug Y Passively Diffused More Effectively Than Drug Z

Multiple Choice

If Drug Y passively diffused more effectively than Drug Z in a local environment with a pH of 3,what should be concluded?

A) Drug Y produced more ionized molecules than Drug Z
B) The administration route for Drug Y was more effective than Drug Z.
C) The pKa value of Drug Y was closer to 3 than the pKa of Drug Z.
D) The local environment had a large surface area