For a Given First-Order Reaction,after 230 S,33% of the Reactants

For a given first-order reaction,after 230 s,33% of the reactants remain.Calculate the rate constant for the reaction.

A) 207 s^-1
B) 0.00174 s^-1
C) 0.00209 s^-1
D) 0.000756 s^-1
E) 0.00482 s^-1