A 50-year-old patient is suffering from pernicious anemia. Which of the following laboratory data are most likely for this patient?
a. RBC = 2.5 × 10¹²/L; WBC = 12.5 × 10⁹/L; PLT = 250 × 10⁹/L
b. RBC = 4.5 × 10¹²/L; WBC = 6.5 × 10⁹/L; PLT = 150 × 10⁹/L
c. RBC = 3.0 × 10¹²/L; WBC = 5.0 × 10⁹/L; PLT = 750 × 10⁹/L
d. RBC = 2.5 × 10¹²/L; WBC = 2.5 × 10⁹/L; PLT = 50 × 10⁹/L