Answer:
B. They belong to the same species and C. They live in the same area.
Explanation:
This is an educated guess. If you think about it, if there was a population of humansss, we dont have the same parents nor the exact genes so to only two that make sense is those to (^ω^)
I recomend to carb up before long run
If there is no antigen the blood group is 0 !!
extra info ; if both antigen - AB
The answer is ccccccccccccccccccccccccc