<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 63-year-old man comes to the physician because of increasing generalized fatigue for 3 months. He is having more difficulty with keeping up with his activities of daily living and has lost 2.5 kg 5.5 lb over the past month. He has hypertension and hyperlipidemia. He does not smoke and drinks two to three beers on weekends. His medications include lisinopril, hydrochlorothiazide, and atorvastatin. His temperature is 37.1C 98.8F, pulse is 85min, respirations are 15min, and blood pressure is 12573 mm Hg. Examination shows pale conjunctivae. The remainder of the examination shows no abnormalities. His hematocrit is 27.3, leukocyte count is 4500mm3, and platelet count is 102,000mm3. A peripheral blood smear shows numerous blast cells that stain positive for myeloperoxidase, CD33, and CD34. Which of the following is the most likely diagnosis?? A: Acute myeloid leukemia, B: Non-Hodgkin lymphoma, C: Hairy cell leukemia, D: Chronic lymphocytic leukemia, E: Acute lymphoblastic leukemia,  <response>: Based on the information provided in the question stem, the key findings are:- 63-year-old man with fatigue, weight loss, and difficulty with activities of daily living over 3 months - Past medical history of hypertension and hyperlipidemia- Physical exam shows pale conjunctivae, otherwise unremarkable- Lab findings show anemia, leukopenia, thrombocytopenia- Peripheral blood smear shows numerous blast cells positive for myeloperoxidase, CD33, and CD34This presentation is most consistent with acute myeloid leukemia AML. The fatigue, weight loss, cytopenias, and presence of myeloperoxidase positive blasts in the peripheral blood are classic findings for AML. The other options can be ruled out:- Non-Hodgkin lymphoma: no lymphadenopathy or organomegaly noted on exam. - Hairy cell leukemia: no splenomegaly, normal platelet count.- Chronic lymphocytic leukemia: no lymphadenopathy, atypical lymphocytes not described. - Acute lymphoblastic leukemia: blast cells positive for myeloperoxidase rather than T or B cell markers.A: Acute myeloid leukemia 