यदि $y=x \log \left(\frac{1}{a x}+\frac{1}{a}\right)$ है,तो $x(x+1) \frac{d^2 y}{d x^2}+x \frac{d y}{d x}-y=$

  • A
    $0$
  • B
    $1+x$
  • C
    $-1$
  • D
    $x$

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