For a reaction $A + B \to$ product,it was found that the rate of reaction increases four times if the concentration of $A$ is doubled,but the rate of reaction remains unaffected if the concentration of $B$ is doubled. Hence,the rate law for the reaction is

  • A
    $rate = k[A][B]$
  • B
    $rate = k[A]^2$
  • C
    $rate = k[A]^2[B]^1$
  • D
    $rate = k[A]^2[B]^2$

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