Which logical fallacy is used in the text?
Our study looked at people who were successful, as defined by their level of income. Our findings show that successful people consistently make more money than unsuccessful people.
A. false causation: the assumption that because two things happened together, one caused the other
B. circular reasoning: an argument that supports a claim with the claim itself
C. ad hominem: an attack against the person making the argument, rather than the argument itself
Pick the correct answer from the listed options and provide the letter of the selected option.

B