<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 35-year-old woman presents with exertional dyspnea and fatigue for the past 3 weeks. She says there has been an acute worsening of her dyspnea in the past 5 days. On physical examination, the mucous membranes show pallor. Cardiac exam is significant for the presence of a mid-systolic murmur loudest in the 2nd left intercostal space. A CBC and peripheral blood smear show evidence of microcytic, hypochromic anemia. Which of the following parts of the GI tract is responsible for the absorption of the nutrient whose deficiency is most likely responsible for this patients condition?? A: Duodenum, B: Jejunum, C: Terminal ileum, D: Antrum of the stomach, E: Body of the stomach,  <response>: This is a clinical vignette describing a 35-year-old woman with exertional dyspnea, fatigue, and worsening dyspnea over the past few weeks. She has physical exam findings of pallor and a systolic heart murmur. Lab findings show a microcytic, hypochromic anemia. Based on the microcytic, hypochromic anemia, the most likely nutritional deficiency is iron deficiency anemia. Iron is absorbed in the duodenum.Therefore, the duodenum is the part of the GI tract responsible for absorbing the nutrient whose deficiency is most likely causing this patients condition.A: Duodenum 