Which logical fallacy is used in the text?
How could Vivian have anything insightful to say about foreign affairs? She grew up on a farm.
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. bandwagon fallacy: the assumption that the popular choice is automatically correct
Determine the correct option from the provided choices and reply with its corresponding letter.

B