If a Reducing Agent M Reacts with an Oxidizing Agent $\varepsilon$

If a reducing agent M reacts with an oxidizing agent N⁺ to give M⁺ and N,and the equilibrium constant for the reaction is 1.6,then what is the $\varepsilon$ ° value for the oxidation-reduction reaction?

A) 0.012 V
B) -0.012 V
C) 0.0060 V
D) -0.0060 V
E) 0.024 V