Which logical fallacy is used in the text?
The two authors of this study claim that social media can be healthy for adolescents. However, neither author attended a top-ranked medical school, so you can't trust their research.
A. straw man: a misrepresentation of an opponent's position that makes it easier to argue against
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
Choose the right answer from the options and respond with its letter.

C