If $3+\log _{5} x=2 \log _{25} y,$ then $x=$

  • A
    $\frac{y}{125}$
  • B
    $\frac{y}{25}$
  • C
    $\frac{y^2}{625}$
  • D
    $3-\frac{y^2}{25}$

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