The Equilibrium Constant for the Reaction Below Is 1

The equilibrium constant for the reaction below is 1.7*10¹⁷ at 25 C.
H₂ (g) + Br₂(g) 2 HBr (g) K c (25 C) = 1.7*10¹⁷
What can be stated about the relative equilibrium distribution for this mixture?

A) The mixture contains predominantly H₂ at equilibrium.
B) The mixture contains predominantly Br₂ at equilibrium.
C) The mixture contains predominantly HBr at equilibrium.
D) The mixture contains predominantly H₂ and Br₂ at equilibrium.
E) The mixture contains relatively equal amounts of H₂, Br₂ and HBr at equilibrium.