Mitzi, a little schnauzer, has recently begun to have a chronic cough. Her owner notices that Mitzi is bumping into things as well. She takes her in to the veterinarian, who does an examination. When the vet weighs Mitzi, he notices that she has lost 3 lbs. since her last appointment, which is a lot for a 15 lb. dog. While doing the exam, the vet believes he can explain why Mitzi is bumping into things. She does not respond when he moves his fingers next to her left eye. Considering all of these symptoms together, which statement would MOST likely be true of Mitzi?

Mitzi has had a heartworm lose its way and travel to her left eye, blinding it.

Mitzi has sustained neurological damage from eating something with nematodes in it.

Mitzi is suffering from an overload of ear mites that has paralyzed her left eye.

Mitzi has developed a lung infection from inhaling coccidia spores.