For a hypothetical reaction $A + B + C \rightarrow \text{Product}$,the rate is given by $r = -\frac{d[A]}{dt} = K[A]^{1/2}[B]^{1/3}[C]^{1/4}$. The order of the reaction is:

  • A
    $1$
  • B
    $1/2$
  • C
    $2$
  • D
    $13/12$

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