[Solved]: A 45-year-old woman visits her primary care…

A 45-year-old woman visits her primary care provider because of easy fatigability, shortness of breath on exertion, and paresthesias in her legs. Her past medical history is significant for hypertension. She takes hydrochlorothiazide, lisinopril, and a multivitamin every day. Her family history is non-contributory. She drinks alcohol almost every day and smokes cigarettes only when she drinks. Today, her vital signs are temperature 37.0deg C (98.6deg F), heart rate 94/min, respiratory rate 16/min, and blood pressure 130/92 mm Hg. On exam, she has marked pallor and a faint bluish tinge to her lips and distal fingertips. Her heart has a regular rate and rhythm, and her lungs are clear to auscultation bilaterally. Additionally, she has decreased sensation to light touch and decreased vibration sense in both lower legs. Her complete blood count is as follows:Hemoglobin8.0 g/dLMCV112 fLWBC2,500/mm3Platelets95,000/mm3What is the most likely diagnosis for this patient?A.Vitamin B12 deficiencyB.Iron deficiencyC.Folic acid deficiencyD.Vitamin C deficiencyE.Vitamin A deficiency