One problem with the polygraph test is that people who are innocent may fail the test, a situation called a false positive

When this happens, some experts (or polygraph technicians) may assume that the individual is, in fact, guilty but simply won't admit to their guilt. In this case, the inaccuracy of the polygraph test is no longer possible to demonstrate, and this is a problem that involves which principle of critical thinking?
A) Falsifiability
B) Occam's Razor
C) Extraordinary claims
D) Correlation vs. causation

Answer: A