For a First Order Reaction, the Half-Life $t_{1 / 2}$ = 237 S What Is the Rate Constant, K, of the Reaction

For a first order reaction, the half-life, $t_{1 / 2}$ = 237 s. What is the rate constant, k, of the reaction?

A) It is not possible to determine the rate constant.
B) 0.0029 s^-1.
C) 0.0084 s^-1.
D) 342 s.