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