यदि $\log _{2}\left(9^{x-1}+7\right)-\log _{2}\left(3^{x-1}+1\right)=2$ है,तो $x$ के मान हैं

  • A
    $0, 2$
  • B
    $0, 1$
  • C
    $1, 4$
  • D
    $1, 2$

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