I ARRIVED TO ANSWER C BUT IDK HOW.

Hi, let's work through what must be true based on the new scenario, that h is exactly one and f and m cannot be together. P: F G H Q: S: K We also know that H cannot be assigned again, and so therefore F or G must be assigned to q and s. However, since G cannot go with L and F cannot go with M, the only way we can fill the middle row is to put K there. So, we know k must be in twice.