<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 15-year-old girl presents to her primary care physician with her parents. She is complaining of fever and a sore throat for the past 4 days. She was born at 39 weeks gestation via spontaneous vaginal delivery and is up to date on all vaccines and is meeting all developmental milestones. Her boyfriend at school has the same symptoms including fever and sore throat. Today, her heart rate is 90min, respiratory rate is 17min, blood pressure is 11065 mm Hg, and temperature is 38.2C 100.8F. Examination revealed cervical lymphadenopathy and mild hepatosplenomegaly. Oral exam reveals focal tonsillar exudate. A monospot test is positive. This patient is most likely infected with which of the following viruses?? A: Epstein-Barr virus, B: Variola virus, C: Cytomegalovirus, D: Herpes simplex virus, E: Varicella virus,  <response>: This is a clinical vignette about a 15-year-old girl presenting with fever, sore throat, and lymphadenopathy. The key findings are:- 15-year-old girl - Fever, sore throat x 4 days- Exam shows cervical lymphadenopathy, tonsillar exudates- Monospot test positiveBased on the patients age, symptoms, and positive monospot test, this is most consistent with infectious mononucleosis caused by Epstein-Barr virus EBV. EBV typically causes fever, sore throat, lymphadenopathy and hepatosplenomegaly in adolescents and young adults. The monospot test detects heterophile antibodies that are produced in response to EBV infection.The other virus choices can be ruled out:- Variola virus causes smallpox, which is not consistent.- Cytomegalovirus is less likely in an immunocompetent adolescent. - Herpes simplex virus causes oralgenital lesions, which are not described.- Varicella virus causes chickenpox, also not described here.A: Epstein-Barr virus 