26. A medical study finds a strong statistical association between daily coffee consumption and a reduced risk of developing Parkinson's disease. However, the study cannot prove that coffee drinking causes the reduction in risk. By which epidemiological maxim is this limitation of the study best summarized? (A) Correlation does not imply causation. (B) The dose makes the poison. (C) The population is the patient. (D) A random sample is the best sample. (E) The plural of anecdote is not data.