Let 𝑝1 and 𝑝2 denote two arbitrary prime numbers. Which one of the following…

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Let 𝑝1 and 𝑝2 denote two arbitrary prime numbers. Which one of the following statements is correct for all values of 𝑝1 and 𝑝2?

  1. A.

    𝑝1 + 𝑝2 is not a prime number.

  2. B.

    𝑝1𝑝2 is not a prime number.

  3. C.

    𝑝1 + 𝑝2 + 1 is a prime number.

  4. D.

    𝑝1𝑝2 + 1 is a prime number.

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