Which set of values represents typical reference ranges for red blood cell, white blood cell, and platelet counts in healthy adults?

Which set of values represents typical reference ranges for red blood cell, white blood cell, and platelet counts in healthy adults?

• A. RBC 7.0–8.0 million/µL; WBC 1,000–2,000/µL; Platelets 200,000–300,000/µL
• B. RBC 4.5–6.0 million/µL; WBC 4,000–11,000/µL; Platelets 150,000–450,000/µL
• C. RBC 4.0–4.5 million/µL; WBC 20,000–40,000/µL; Platelets 100,000–200,000/µL
• D. RBC 2.0–3.0 million/µL; WBC 30,000–60,000/µL; Platelets 50,000–100,000/µL

Answer: (B)