John Bernal Suggested That Prebiotic Synthesis of Polymers Took Place

John Bernal suggested that prebiotic synthesis of polymers took place on clay because

A) Clay minerals are known to bind organic molecules.
B) Clay is negatively charged and attracts cations.
C) Some minerals in clay attract organic monomers and catalyze chemical reactions.
D) Clay minerals can attract and bind organic molecules, catalyze chemical reactions and attract cations.
E) Clay is positively charged and can bind organic molecules for polymerization.