A male patient with known CAD and stents placed presents to an acute care facility with a report of chest pain. The complete blood count report of the patient shows a red blood cell count of 3.0 cells × 106 mcl (normal is 4.35 to 5.65 million red blood cells per microliter (mcL)), hemoglobin levels of 10g/dL (normal is 13.5 to 17.5 grams per deciliter), hematocrit of 30% (normal is 38.3 to 48.6 percent), mean corpuscular volume of 70 fl (normal is 80 to 100 fl), and mean corpuscular hemoglobin of 25 pg (normal is between 27.5 and 33.2 picograms (pg)). Microscopy shows microcytic and hypochromic RBCs. Which type of anemia has the patient developed?