If the majority of the residents of the apartment complex complain that their apartments are infested with ants, then...

Emil-Kunkin August 12, 2024

The argument essentially goes as follows:
If X then Y
However, Not X, so Not Y.

B is different, it goes as follows:

If not higher airfares, the number of flights not reduced,
however, not higher airfares, so not reduced.

We dont have the illegal reversal in B.