Which of the Following Statements Is TRUE with Regard to Oral

Which of the following statements is TRUE with regard to oral herpes?

A) There is an effective cure for oral herpes.
B) Lesions become more severe with each recurrence.
C) Ninety percent of all cases are caused by human herpesvirus 2 (HHV -2) .
D) Lesions can be triggered by emotional stress or physiologic changes.
E) Primary infections are usually characterized by severe lesions.