A．She would establish what cures the fever, then compare the treatment with other successful treatments to classify the disease.
B．She would wait until the disease appears in other patients, then classify it by establishing variations in their symptoms.
C．She would determine whether the disease is acquired or genetic, then classify it accordingly.
D．She would isolate the bacteria or virus or genetic anomaly which causes the disease, then classify it accordingly.
E． She would describe the patient's symptoms, compare them to patients who have had similar symptoms, then treat the pattern as a disease.