The half-life period of a first order reaction is $100 \, \text{sec}$. The rate constant of the reaction is
- A$6.93 \times 10^{-3} \, \text{sec}^{-1}$
- B$6.93 \times 10^{-4} \, \text{sec}^{-1}$
- C$0.693 \, \text{sec}^{-1}$
- D$69.3 \, \text{sec}^{-1}$
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