Many believe that marathons are ultimately unhealthy. While running has many cardiovascular benefits, marathon opponents claim joint strain and muscular imbalances outweigh the pros. Moreover, they assert that all the benefits of marathoning can be captured in shorter runs.

Which of the following statements, if true, would most strengthen the above argument?
Option 1: Marathon runners live longer than the general population.
Option 2: There are no observed health differences between marathon runners and 10k runners.
Option 3: Marathon runners require knee replacements 4 years earlier, on average, than the general population.