Vasanti,a 25-year-old girl,presents with complaints of fever and weakness.On examination there is splenomegaly of 3 cm below the costal margin.Hb is 8 gm/dL,TLC is 3,000/mm3,platelet count is 80,000/mm3.Which of the following is the least likely diagnosis:

• A. Acute lymphocytic leukemia
• B. Anemia of chronic disease
• C. Aplastic anemia
• D. Megaloblastic anemia