For the Reaction 2 H₂ S(g) ⇆ 2 H₂ (G) $\degree$

For the reaction 2 H₂ S(g) ⇆ 2 H₂ (g) + S₂ (g) , K_c =1.7 * 10^-7 at 800.0 $\degree$
C.If the initial concentration of H₂S in a closed container is 0.75 M, what is the approximate equilibrium concentration of H₂?

A) 0.37 M
B) 3.2 * 10^-3 M
C) 6.3 * 10^-3 M
D) 5.8 * 10^-3 M
E) 2.9 * 10^-3 M