<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 4-year-old boy is brought to the emergency department by his parents after 10 days of fever, varying from 38.040.0C 100.4104.0F. On physical examination, the child is ill-looking with an extensive rash over his trunk with patchy desquamation. His hands are swollen, and he also shows signs of a bilateral conjunctivitis. The laboratory test results are as follows:Hemoglobin 12.9 gdLHematocrit 37.7Mean corpuscular volume 82.2 μm3Leukocyte count 10,500mm3Neutrophils 65Lymphocytes 30Monocytes 5Platelet count 290,000mm3Erythrocyte sedimentation rate ESR 35 mmhWhat is the next best step in the management of this patients condition?? A: Echocardiography, B: Low-dose aspirin, C: High-dose aspirin, D: Corticosteroids, E: Influenza vaccine,  <response>: This is a clinical case of a 4-year-old boy with fever, rash, swollen hands, and conjunctivitis. The description and lab findings are consistent with Kawasaki disease. The next best step in management would be treatment with high-dose aspirin to reduce inflammation and prevent coronary artery abnormalities that can occur with this condition. Echocardiography may be indicated to evaluate coronary arteries but is not the immediate next step. Low-dose aspirin, corticosteroids, and influenza vaccine are not appropriate treatments for Kawasaki disease at this stage.C: High-dose aspirin 