If the sum of the roots of the equation ${x^2} + px + q = 0$ is equal to the sum of their squares,then

  • A
    ${p^2} - {q^2} = 0$
  • B
    ${p^2} + {q^2} = 2q$
  • C
    ${p^2} + p = 2q$
  • D
    None of these

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