The negation of the statement "For all real numbers $x$ and $y, x+y=y+x^{\prime \prime}$ is

• A

  For all real numbers $x$ and $y, x+y \neq y+x$
• B

  For some real numbers $x$ and $y, x+y=y+x$
• Correct answer
  C

  For some real numbers $x$ and $y, x+y \neq y+x$
• D

  For some real numbers $x$ and $y, x-y=y-x$

Hence, the correct answer is option: 'C'.