A Current Leading Hypothesis About the First System of Inheritance

A current leading hypothesis about the first system of inheritance in the earliest life forms involves

A) self- replicating RNA molecules aided by ribozymes.
B) proteins that served as templates for RNA molecules,leading to the formation of DNA.
C) self- replicating DNA molecules (the "DNA world" hypothesis) .
D) self- replicating polypeptides aided by ribosomes.