Which logical fallacy is used in the text?
Denise said there's no way Scotland's Loch Ness Monster is real, but she's not even Scottish, so there's no way she could really know.
A. slippery slope fallacy: the false assumption that a small first step will lead to extreme consequences
B. ad hominem: an attack against the person making the argument, rather than the argument itself
C. circular reasoning: an argument that supports a claim with the claim itself
Determine the correct option from the provided choices and reply with its corresponding letter.

B