For a First-Order Reaction with a Single Reactant, After 230

For a first-order reaction with a single reactant, after 230.0 seconds, 10.0% of the reactant remains. The rate constant for the reaction is, therefore,

A) 0.000640 s^-1
B) 0.0100 s^-1
C) 100 s^-1
D) 0.0510 s^-1
E) 0.0915 s^-1