{Is that Jeno??? because if it is Y A S girl!}
I think the answer is A, at the end of the passage it says "and the pigs had to argue very hard to persuade them that there was no such place"
The pigs were talking or arguing with the animals that believed in Sugarcandy Mountain, this can complicate the pigs control over the other animals; if they believe in in such things like Sugarcandy Mountain who knows what they will believe next?
Hope this kinda helps!