The rate of disappearance of \(SO_2\) in the reaction, \(2SO_2\) + \(O_2 \rightarrow 2SO_3\) is \(1.28\times 10^5 \ Ms^{-1}\). The rate of appearance of \(SO_3\) is
(a) \(0.64 \times 10^{-5} \ Ms^{-1}\)
(b) \(0.32 \times 10^{-5}\ Ms^{-1}\)
(c) \(2.56 \times 10^{-5} \ Ms^{-1}\)
(d) \(1.28 \times 10^{-5} \ Ms^{-1}\)