If $\log y$ is an integrating factor of $\frac{dx}{dy} + P(y)x = Q(y)$,then $P(y) =$

  • A
    $\frac{1}{y + \log y}$
  • B
    $\frac{y}{\log y}$
  • C
    $\frac{\log y}{y}$
  • D
    $\frac{1}{y \log y}$

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