Polyuria, polydipsia, and polyphagia are three major symptoms of diabetes. Polyuria is the need to urinate frequently, polydipsia is an increased thirst and fluid intake, and polyphagia is an increased appetite. Although it is common for multiple symptoms to appear together, some diabetics present none of the three symptoms. Presenting any one or a combination of these symptoms is an example of an event, as is presenting no symptoms. What is the complement of the event that a diabetic person presents all three symptoms?
A. A diabetic person presents at most one symptom.
B. A diabetic person presents at most two symptoms.
C. A diabetic person presents all three symptoms.
D. A diabetic person presents at least one symptom.
E. A diabetic person presents at least two symptoms.