Your friend starts eating a raw meat diet. Shortly after starting this diet, they start to experience an abundance of issues, such as vomiting, fatigue, diarrhea, fever, and abdominal discomfort. Their doctor suspects a helminthic infection and would like to confirm this suspicion by conducting serological testing. What disease does the doctor suspect your friend has?

A) Trichinosis
B) Typhoid fever
C) Cryptosporidiosis
D) Gastroenteritis