Answer:
A.1
Explanation:
because 1+1=2 then you take 2 from that and add it to 3
2+3=5 then you get 5. now you have to subtract 4 from 5
5-4=1 and it gives you 1.
A.
1+1+3-4
1+1=2
3-4=-1
2+-1=1
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