If $m_1 \ g$ of metal $A$ displaces $m_2 \ g$ of another metal $B$ from its salt solution,and their equivalent weights are $E_1$ and $E_2$ respectively,how is the equivalent weight of $A$ expressed?

  • A
    $\frac{m_1}{m_2} \times E_2$
  • B
    $\frac{m_2}{m_1} \times E_2$
  • C
    $\frac{m_1}{m_2} \times E_1$
  • D
    $\frac{m_2}{m_1} \times E_1$

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