This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to deal with dog allergies
Talk to a doctor.
There are many treatments options regarding dog allergies. Also, unless you have been previously diagnosed, you should not assume allergies are related to your dog.

(I). It is important to be there as soon as possible and be prepared to address any issues that have developed since your initial diagnosis. It is a good idea to get to the root of the problem right away rather than waiting until the symptoms pass completely; the sooner the vet can tell you the cause, the better.; (II). The treatment for a dog allergy is not specifically certain, but a vet may be able to confirm or rule out the cause of the odor. It is often safer for people with allergies for extended periods of time.; (III). The most important thing you should do is correct an allergy when it presents itself. If there is no treatment, the disease can spread quickly.; (IV). Have an allergy test to see if actually have an allergy to dander. Say something like, " i have an allergy and i think it's to the family pet.;
The answer is:
(IV).