<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:An 18-year-old college student seeks evaluation at an emergency department with complaints of fevers with chills, fatigue, diarrhea, and loss of appetite, which have lasted for 1 week. He says that his symptoms are progressively getting worse. He was taking over-the-counter acetaminophen, but it was ineffective. The past medical history is insignificant. His temperature is 38.8C 101.9F and his blood pressure is 10065 mm Hg. The physical examination is within normal limits, except that the patient appears ill. Eventually, a diagnosis of typhoid fever was established and he is started on appropriate antibiotics. Which of the following cellular components is most likely to be responsible for the toxic symptoms in this patient?? A: Lipid A - a toxic component present in the bacterial cell wall, B: Toxins secreted by the bacteria, C: Pili on the bacterial cell surface, D: Flagella, E: Outer capsule,  <response>: This is a question about identifying the cellular component responsible for the toxic symptoms seen in a patient diagnosed with typhoid fever. Typhoid fever is caused by the bacterium Salmonella typhi. The toxic symptoms are caused by lipopolysaccharides LPS present in the outer membrane of the bacterial cell wall. LPS consists of lipid A, which is responsible for the toxic effects. Therefore, the correct answer is option A.A: Lipid A - a toxic component present in the bacterial cell wall 