Determine which numbers in the set are integers.
-8.42, 15, -5?, 0, 9.0, -1
A. 15, 0, -1
B. 15, 0, 9.0, -1
C. 15, -5?, 0, -1
D. 15, 0
E. -8.42, 15, 0, 9.0, -1
Answer: B
Mathematics
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and 
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