<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:An 18-year-old male in his first year of college presents to the emergency room with a fever and a severe headache. He reports having unprotected sex with several partners over the past few weeks. Upon examination, the male demonstrates nuchal rigidity and photophobia. His past medical history is notable for a lack of vaccinations beginning from infancy due to his parents belief that vaccinations may cause autism. The bacteria causing these symptoms would most likely demonstrate which of the following?? A: Positive quellung reaction, B: Negative quellung reaction, C: Lactose fermentation, D: Urease positive, E: Negative catalase test,  <response>: This is a clinical vignette describing an 18-year-old male college student presenting with fever, severe headache, nuchal rigidity, and photophobia. His recent history of unprotected sex with multiple partners and lack of vaccinations makes him at risk for certain infections. The symptoms described are classic for meningitis. The question asks which test would be positive for the bacteria most likely causing his symptoms. Based on the clinical presentation, the most likely cause is meningococcal meningitis caused by Neisseria meningitidis. N. meningitidis would demonstrate a positive quellung reaction, which is a test used to identify the polysaccharide capsule on the bacteria.A: Positive quellung reaction 