<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 12-year-old boy is brought to the emergency department by his mother for a rash. The patient had a sore throat a few days ago with symptoms initially well-controlled with lozenges. However, today he had a rash covering his body, which prompted his presentation. The mother states that she did smear an herbal remedy on the rash with no alleviation in symptoms and also gave him a single dose of amoxicillin left over from a previous infection. The patient is up to date on his vaccinations and has no past medical conditions. His temperature is 101F 38.3C, blood pressure is 10268 mmHg, pulse is 97min, respirations are 19min, and oxygen saturation is 99 on room air. Physical exam is notable for the findings in Figures A and B. The rash seen in Figure B is very coarse. Which of the following is the most likely diagnosis?? A: Infectious mononucleosis, B: Kawasaki disease, C: Rheumatic fever, D: Scarlet fever, E: Urticaria,  <response>: Based on the information provided in the question stem, this appears to be a case of scarlet fever. The key findings are:- 12-year-old boy with recent sore throat now presenting with a rash - Rash is described as very coarse- Patient had recently taken an herbal remedy and amoxicillin without improvement- Vital signs show fever of 101F Scarlet fever often presents after a streptococcal pharyngitis strep throat with a characteristic coarse, red rash along with fever. The rash of scarlet fever classically feels like sandpaper. The other answer choices can be ruled out based on details provided. Infectious mononucleosis may cause a rash but not the coarse rash described. Kawasaki disease and urticaria would not present this way after a recent sore throat. Rheumatic fever can follow strep throat but the rash is more lace-like.D: Scarlet fever 