Solve the system by the addition method.
A. {(2, 3), (2, -3), (-2, 3), (-2, -3)}
B. {(1, 3), (1, -3), (-1, 3), (-1, -3)}
C. {(1, 3), (-1, -3)}
D. {(2, -3), (-2, 3)}
Answer: A
Mathematics
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