. The rate constant for a first order reaction is \(4.606 \times 10^{-3} \mathrm{~s}^{-1}\). The time required to reduce \(2.0 \mathrm{~g}\) of the reactant to \(0.2 \mathrm{~g}\) is :
A \(100 \mathrm{~s}\)
B \(200 \mathrm{~s}\)
(C) \(500 \mathrm{~s}\)
D \(1000 \mathrm{~s}\)