<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 38-year-old woman presents with dysphagia. She says the dysphagia is worse for solids than liquids and is progressive. She also complains of associated weakness, fatigue, and dyspnea. The patient denies any recent history of weight loss. Laboratory findings are significant for a hemoglobin of 8.7 gdL. A peripheral blood smear shows evidence of microcytic hypochromic anemia. Which of the following is the most likely cause of her dysphagia?? A: Lower esophageal ring, B: Failure of the relaxation of lower esophageal sphincter, C: Upper esophageal web, D: Lower esophageal spasm, E: Esophageal carcinoma,  <response>: This is a clinical case of a 38-year-old woman with progressive dysphagia, weakness, fatigue, dyspnea, microcytic hypochromic anemia based on lab findings. The key findings are progressive dysphagia worse for solids, microcytic hypochromic anemia which points to iron deficiency anemia. This makes upper esophageal web the most likely cause as it can lead to iron deficiency from chronic occult bleeding.C: Upper esophageal web 