The following equilibrium constants are given - <br> <br> The equilibrium constant for the oxidation of $NH_3$ by oxygen to give $NO$ is :

Question

( A ) $\frac{K_2^2K_3}{K_1}$
( B ) $\frac{K_2K_3^3}{K_1}$
( C ) $\frac{K_1K_2}{K_3}$
( D ) $\frac{K_2K_3^2}{K_1}$