Goldbach's conjecture states that every even integer greater than 2 can be written as the sum of two prime numbers (for example, ). So far, no one has been able to prove the validity of this conjecture or find a counterexample. What would a counterexample consist of?
A. An odd integer greater than 2 that can be written as the sum of two prime numbers.
B. An even integer greater than 2 that can be written as the sum of two prime numbers.
C. An even integer greater than 2 that can't be written as the sum of two prime numbers.
D. An odd integer greater than 2 that can't be written as the sum of two prime numbers.
E. None of these are counterexamples.
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The conjecture is talking about even integers, so A and D are out. B is what the conjecture is stating, so it is out. If we find an example of C, then this goes against the conjecture directly. C is the answer.