It take 40min for concentration of reactant in first order to drop from 0.4M to 0.3M at $25^oC$.How long it will take for reaction to be 90% complete?

Question

$\begin{array}{1 1}(a)\;330.15min\\(b)\;300.15min\\(c)\;310.15min\\(d)\;320.15min\end{array}$