What happens next in this paragraph?

How to treat feline panleukopenia (distemper )
Keep an eye out for a high fever.
The incubation period from being in contact with the virus to developing clinical signs is approximately four to five days. The first symptom to develop is a high fever, which can occur so suddenly that the owner suspects their cat has been poisoned.
Select from: I. When the fever subsides within four to seven days, the owner can monitor the health of the cat from afar. The temperature should fluctuate or remain just below 10f (9c). II. Fevers may rise or fall before this very short period, but sometimes signs may change abruptly. Look for changes in your cat's eating patterns. III. In adult cats that have a strong immune system or are vaccinated, they may contact the virus but keep it in check and not become ill. Watch for vomiting and bloody diarrhea to start. IV. It usually goes away after one to two days. This type of fever does not usually recur in cats until they are older.
III.