Thanks for the question! Sure, let’s take a look at this stimulus. Lance argues that every general rule has at least one exception. And then Frank concludes points out that well, what Lance said is a general rule. So if it’s true, there has to be at least one general rule with no exceptions (because either Lance’s general rule has an exception, or it doesn’t, which makes it an exception). So Frank’s showing that there’s a contradiction.
(C) tells us that Frank tries to show that no general rule can have exceptions. Does Frank try to show this, that no general rule can have exceptions? Frank actually explicitly says that if Lance is right, at least one general rule has no exceptions. So Frank’s definitely not saying (C), which makes it wrong.
Hope this helps! Feel free to ask any other questions that you might have.
