<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 by his parents because of a new rash. The family immigrated from Laos one year ago and recently obtained health insurance. A week ago, the boy stated that he was not feeling well and asked to stay home from school. At the time, he starting having cough, nasal congestion, and irritated eyes symptoms that persisted and intensified. His parents recall that at the time they noticed small whitish-blue papules over the red buccal mucosa opposite his molars. Five days ago, his parents noticed a red rash around his face that quickly spread downward to cover most of his arms, trunk, and then legs. His temperature is 102.5F 39.2C, blood pressure is 11085 mmHg, pulse is 102min, and respirations 25min. On physical exam, he has intermittent cough, cervical lymphadenopathy, and nonpurulent conjunctivitis accompanied by a confluent, dark red rash over his body. This patient is at risk for which of the following complications later in life?? A: CNS degeneration, B: Valvular heart disease, C: Nonreactive pupils, D: Monoarticular arthritis, E: B cell neoplasm,  <response>: This is a clinical vignette describing a 7-year-old boy with symptoms of fever, cough, nasal congestion, irritated eyes, oral lesions, and a widespread rash, along with lymphadenopathy and conjunctivitis on exam. His recent immigration from Laos and the description of the rash spreading from the face downward suggests this may be a case of measles infection. One of the known late complications of measles is subacute sclerosing panencephalitis SSPE, a rare progressive neurological disorder caused by persistent measles virus infection of the central nervous system. A: CNS degeneration 