Find all integer factors of the given number.30
A. -30, -20, -10, -6, -5, -3, -2, -1, 1, 2, 3, 5, 6, 10, 20, 30
B. -30, -10, -6, -5, 5, 6, 10, 30
C. -30, -5, -1, 1, 5, 30
D. -30, -15, -10, -6, -5, -3, -2, -1, 1, 2, 3, 5, 6, 10, 15, 30
Answer: D
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