Consider the Following Reversible Reaction

Consider the following reversible reaction:
POCl₃(g) ⇌ POCl(g) + Cl₂(g) K_c = 0.450
The following initial amounts of reactants and products were mixed: [POCl₃] = 0.750 M,[POCl] = 0.550 M,and [Cl₂] = 0.150 M.What is the equilibrium concentration of POCl?

A) 0.395 M
B) 0.155 M
C) 0.740 M
D) 0.945 M
E) 0.360 M