When a Researcher Tests His or Her Hypothesis,he or She

When a researcher tests his or her hypothesis,he or she is often hoping to gather information that is consistent with a particular theory.What,more specifically,allows a researcher to say that he or she has "proven" a theory?

A) Any time a hypothesis is confirmed,a theory is automatically "proven."
B) Any time a hypothesis confirms one theory and simultaneously disconfirms at least one other theory,a theory has been "proven."
C) Any time a hypothesis confirms one theory and simultaneously disconfirms all other known theories,a theory has been "proven."
D) A researcher is never able to say that he or she has "proven" a theory.