question: Q:A 6-year-old boy is brought to a primary care provider by his adoptive parents for evaluation of a 3-month history of jaw swelling. He has a travel history of recent immigration from equatorial Africa where his deceased mother was positive for HIV and died from related complications. On physical exam, extensive lymph node swelling on the left side of his jaw is noted. There is also an ulceration that appears to be infected. Fine needle biopsy of the lymph node yields a diagnosis of Burkitt’s lymphoma by the pathologist. Which of the following is most likely associated with the involvement of lymph nodes around his jaw?? 
  {'A': 'Infected ulcer', 'B': 'Close family member with HIV', 'C': 'Recent immigration from equatorial Africa', 'D': 'Gender of the patient', 'E': 'Ethnicity of the patient'},