[Expert Solution]: 76-year-old woman presents for a routine…

76-year-old woman presents for a routine checkup with her doctor. She is concerned that she often feels tired and has difficulty doing her household chores. She complains that she gets fatigued and breathless with mild exertion. Her past medical history is significant for diabetes mellitus, chronic kidney disease, and primary biliary cinhosis. Her medications are lisinopril, insulin, and metformin. Family history is noncontributory. Social history is significant for drinking one beer a day. Today, her temperature is 37.0deg C (98.6deg F), heart rate is 98/min, respiratory rate is 16/min, and blood pressure is 128/66 mm Hg. On examination, she is pale and appears tired her heart has a regular rate and rhythm, and her lungs are clear to auscultation bilaterally. A complete blood count shows the following:Leukocyte count10,000/mm3Red blood cell count3.1 million/mm3Hemoglobin11.0 g/dLMCV85 um?MCH27 pg/cellPlatelet count450,000/mm34043A fecal occult blood test is negative. What is the most likely cause of her anemia? A. Chronic kidney disease B. Acute bleeding C. Alcoholism D. Liver diseaseO E. Colorectal cancer