Interpret the following results on cell and serum typing from a normal healthy donor who had never been transfused or received a bone marrow transplant. Cell Typing Serum Typing Anti-A:3+, Anti-B: 2+ and mix field, Anti-A1:0, A1 cells:negative, B cells:negative What is the correct interpretation of this blood?
1) Group O
2) Group A1B
3) Group A2B3
4) Group A3B3