This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: RBC Development and Classification of Anemias, Subject name: Pathology
The major hemoglobin present in an adult is: 
Select and explain. 
A. HbA2, B. HbA1, C. HbA1c, D. HbA1b
B: HbA1
Answer: B: HbA1 
Explanation: - Major Hb present in adult is HbA1 - contain 2a and 2b chains. - Other Hb present in normal adult -3% HbA2 ;1% HbF