For the reaction `N_(2(g))+O_(2(g))hArr2NO_((g)),` the value of `K_(c)` at `800^(@)C` is 0.1. When the equilibrium concentrations of both the reactants is 0.5 mol, what is the value of `K_(p)` at the same temperatuer
A. `0.5`
B. `0.1`
C. `0.01`
D. `0.025`