<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 7-year-old boy is brought to his pediatrician for evaluation of a sore throat. The sore throat began 4 days ago and has progressively worsened. Associated symptoms include subjective fever, pain with swallowing, cough, and fatigue. The patient denies any cough or rhinorrhea. Vital signs are as follows: T 38.6 C, HR 88, BP 11567, RR 14, and SpO2 99. Physical examination is significant for purulent tonsillar exudate; no cervical lymphadenopathy is noted. Which of the following is the best next step in the management of this patient?? A: Prescribe 10-day course of penicillin, B: Recommend acetaminophen for symptomatic relief, C: Prescribe acyclovir, D: Perform throat culture, E: Perform rapid antigen detection test,  <response>: This is a case of a 7-year-old boy presenting with signs and symptoms of a sore throat, including fever, pain with swallowing, cough, fatigue, and purulent tonsillar exudate on exam. The main diagnostic considerations are bacterial pharyngitistonsillitis versus viral pharyngitis. The best next step would be to perform a rapid streptococcal antigen detection test andor throat culture to determine if it is a streptococcal infection that should be treated with antibiotics versus a viral infection that would not require antibiotics. E: Perform rapid antigen detection test 