Consider the Following Reaction and the Value of Its Equilibrium

Consider the following reaction and the value of its equilibrium constant: H₂O(g) + Cl₂O(g) ⇌ 2HOCl(g) K_eq = 0.090 If the equilibrium concentration of HOCl is measured at 0.15 M, what are the equilibrium concentrations of H₂O and Cl₂O, assuming that they are equal?

A) 0.15 M
B) 0.090 M
C) 0.50 M
D) 0.25 M
E) 0.60 M