If $3^x = 4^{x-1}$,then $x = $

  • A
    $(A) \frac{2 \log_3 2}{2 \log_3 2 - 1}$
  • B
    $(B) \frac{2}{2 - \log_2 3}$
  • C
    $(C) \frac{1}{1 - \log_4 3}$
  • D
    $(D) \frac{2 \log_2 3}{2 \log_2 3 - 1}$

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