This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Which of the following represent Fetal Haemoglobin (HBF) 
Select and explain. 
A. Alpha 2 Beta2, B. Alpha 2 Gamma 2, C. Alpha 2 delta 2, D. Delta 4
B: Alpha 2 Gamma 2
Answer: B: Alpha 2 Gamma 2 
Explanation: Answer- B. Alpha 2 Gamma 2Alpha 2 Gamma 2- < 2% of Total adult HB