Consider the argument: About 70% of all college graduates have student loan debt. So it's a safe bet that three-time pro bowler and Superbowl winning quarterback Russel Wilson has student loan debt since he has both a bachelor's and a master's degree. Which of the following would be the best challenge to the strength (or reliability) of the argument?
a. The median earnings for college graduates is so much higher than that for non-college graduates that the amount of student loan debt is relatively small.
b. The actual percentage of college graduates with significant student loan debt is not 70%. That data was collected in 2012 and it has since changed.
c. Wilson is an unusual graduate since, given his talent, he is likely to have been a scholarship athlete.
d. It is possible for the argument to have true premises and a false conclusion.