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A) 1, 3, 9; 2, 5, 6; 4, 7, 8
B) 1, 3, 9; 2, 7, 8; 4, 5, 6
C) 1, 2, 4; 3, 5, 7; 6, 8, 9
D) 1, 3, 6; 2, 4, 8; 5, 7, 9
Correct Answer: A
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