<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 21-year-old woman comes to the physician because of a 4-day history of abdominal cramps and bloody diarrhea 5 times per day. Her symptoms began after she ate an egg sandwich from a restaurant. Her vital signs are within normal limits. Physical examination shows diffuse abdominal tenderness. Stool culture shows gram-negative rods that produce hydrogen sulfide and do not ferment lactose. Which of the following effects is most likely to occur if she receives antibiotic therapy?? A: Self-limiting systemic inflammatory response, B: Pruritic maculopapular rash on the extensor surface, C: Thrombocytopenia and hemolytic anemia, D: Orange discoloration of bodily fluids, E: Prolonged fecal excretion of the pathogen,  <response>: This is a clinical vignette describing a patient with acute gastroenteritis after eating an egg sandwich from a restaurant. The description of abdominal cramps, bloody diarrhea, and stool culture findings are consistent with Salmonella infection. The question asks about the most likely effect of antibiotic therapy in this patient. Choice A describes a self-limiting inflammatory response which is not specific to antibiotic therapy. Choice B describes an allergic reaction which is unlikely with antibiotic therapy for salmonella. Choice C describes complications of Salmonella infection itself rather than antibiotic therapy. Choice D describes orange discoloration of bodily fluids which can occur with antibiotic therapy for Salmonella due to release of porphyrins from the killed bacteria. Choice E describes prolonged fecal shedding of the pathogen, which is a known risk of antibiotic therapy for Salmonella gastroenteritis. Of these, prolonged fecal shedding is the most likely effect of antibiotic therapy in this clinical scenario.E: Prolonged fecal excretion of the pathogen 