In Order for Macromolecules to Form, Smaller Molecules Must Be

In order for macromolecules to form, smaller molecules must be concentrated. All of the following have been proposed as ways for concentrating organic molecules EXCEPT?

A) Organic molecules could have collected on the surface of clay particles.
B) Organic molecules could have been concentrated when they were trapped in small basins and the water evaporated.
C) Organic molecules could have made copies of themselves and this resulted in concentrations of molecules.
D) Organic molecules could have been concentrated when water froze.