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9. Select the statement that is logically equivalent to "If a number is 5, then
it is a prime number."
A. If a number is a prime, then the number is 5.
B. If a number is not 5, then it is not a prime number.
C. If a number is not a prime, then the number is not 5.
D. If a number is composite, then the number is 5.​