The clinical presentation of a 66-year-old male with six months of progressive fatigue, decreased exercise tolerance, shortness of breath, ovalomacrocytosis, neutrophils with decreased segmentation, pale conjunctiva, low hemoglobin (Hb), high mean corpuscular volume (MCV), low platelets, and low white blood cells (WBCs) is suggestive of:
a) Iron deficiency anemia
b) Folate deficiency anemia
c) Vitamin B12 deficiency anemia
d) Thalassemia