Which Is NOT a Guideline Published in the New England

Which is NOT a guideline published in the New England Journal of Medicine to help prevent misinterpretation of scientific studies?

A) An association between two events is not the same as a cause and effect relationship.
B) Demonstrating one link in a postulated chain of events does not mean that the whole chain has been proved.
C) A single study can prove a theory if it is reviewed by peers.
D) Probabilities are not the same as certainties.
E) The way a scientific result is framed can greatly affect its impact.