An Association Between Populations That Eat More Fish and a Lower

An association between populations that eat more fish and a lower mortality rate from coronary heart disease in the same population would establish which of the following?

A) A group association that may be helpful in generating a hypothesis about the relationship between fish consumption and coronary heart disease.
B) An individual association establishing that eating fish is associated with coronary artery disease.
C) A cause and effect relationship between fish consumption and coronary heart disease.
D) None of these is correct.