<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 46-year-old woman from Ecuador is admitted to the hospital because of tarry-black stools and epigastric pain for 2 weeks. The epigastric pain is relieved after meals, but worsens after 12 hours. She has no history of serious illness and takes no medications. Physical examination shows no abnormalities. Fecal occult blood test is positive. Esophagogastroduodenoscopy shows a bleeding duodenal ulcer. Microscopic examination of a duodenal biopsy specimen is most likely to show which of the following?? A: Curved, flagellated gram-negative rods, B: Irregularly drumstick-shaped gram-positive rods, C: Gram-positive lancet-shaped diplococci, D: Dimorphic budding yeasts with pseudohyphae, E: Teardrop-shaped multinucleated trophozoitesn,  <response>: This is a medical question asking about the most likely microscopic finding in a duodenal biopsy specimen from a patient with a bleeding duodenal ulcer. Based on the clinical history provided, the most likely cause of the duodenal ulcer is Helicobacter pylori infection. H. pylori is a curved, gram-negative rod that is strongly associated with peptic ulcers.A: Curved, flagellated gram-negative rods 