<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 for evaluation of a fever for 1 day. The mother reports that he has had severe pain in his lower extremities and difficulty eating since yesterday. He has not had a cough, nausea, or vomiting. He was born at term and has been healthy. His immunizations are up-to-date. He appears irritable. His temperature is 38.5C 101.3F. Examination shows several flesh-colored, tender papules over the trunk, knees, palms, and soles. There are multiple 2-mm, reddish macules on the hard palate. The remainder of the examination shows no abnormalities. Which of the following is the most likely causal organism of this patients symptoms?? A: Human herpesvirus 6, B: Rubella virus, C: Herpes simplex virus 1, D: Coxsackie A virus, E: Measles virus,  <response>: This is a clinical vignette describing a 4-year-old boy with fever, lower extremity pain, and oral lesions. The key findings are fever, irritability, papules on the trunkextremities, and oral lesions. This presentation is most consistent with hand, foot and mouth disease, which is classically caused by coxsackievirus A. The other viruses listed can cause similar symptoms, but are less likely in this specific clinical scenario.D: Coxsackie A virus 