For the reaction $A \to B$ ,the rate of reaction becomes twenty seven times when the concentration of A is increased three times . What is the order of the reaction ?

Question

$\begin{array}{1 1} (a)\;\text{order of reaction n=4} \\ (b)\; \text{order of reaction n=2} \\ (c)\;\text{order of reaction n=3}\\(d)\;\text{order of reaction n=1} \end{array} $