An Equilibrium Is Established in Which Both the Forward (Fwd)

An equilibrium is established in which both the forward (fwd) and the reverse (rev) reactions are elementary. If the equilibrium constant K_c = 1.6 × 10⁻² and the rate constant k_fwd = 8.0 × 10⁻⁷ s⁻¹ what is the value of k_rev?

A) 1.3 × 10 ⁻⁸ s ⁻¹
B) 7.8 × 10 ⁷ s ⁻¹
C) 2 × 10 ⁴ s ⁻¹
D) 5.0 × 10 ⁻⁵ s ⁻¹
E) None of these choices are correct.