When concentration of $A$ is tripled
$\left[A^{\prime}\right]=[3 A]$
New rate, $r^{\prime}=k\left[A^{\prime}\right]^2[B]=k[3 A]^2[B]=9 k[A]^2[B]$
$r^{\prime}=9 r$
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when attached to $sp^3$ hybridised carbon, their leaving group ability in nucleophilic substitution reaction decrease in the order.
$(i)$ $PCl_3 + 3H_2O \to H_3PO_3 + 3HCl$
$(ii)$ $SF_4 + 3H_2O \to H_3SO_3 + 4HF$
$(iii)$ $BCI_3 + 3H_2O \to H_3BO_3 + 3HCl$
$(IV)$ $XeF_6 + 3H_2O \to XeO_3 + 6HF$
Then according to given information the incorrect statement is