Guidelines Published in the New England Journal of Medicine to Help

Guidelines published in the New England Journal of Medicine to help prevent misinterpretation of scientific studies include each of the following except one. Which one is the exception?

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.