题目信息
If p and q are two different odd prime numbers such that p < q, then which of the following must be true?
A:(2p + q) is a prime number
B:p + q is divisible by 4
C:q – p is divisible by 4
D:(p + q + 1) is the difference between two perfect squares of integers
E:$$p^{2}+q^{2}$$ is the difference between two perfect squares of integers
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正确答案：
D:(p + q + 1) is the difference between two perfect squares of integers
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