Answer:
c
Explanation:
The answer is A
7 + -8 = -1
-6 + -7 = -13
2 + 5 = 7
6 + -1 = 5
-5 + -9 = -14
-7 + 7 + 0
you can then eliminate B.
and only A is left.
4.5m questions
5.9m answers