What Is the Equilibrium Concentration of Cl^-(aq) in a Solution $\leftrightarrow$

Multiple Choice

What is the equilibrium concentration of Cl^-(aq) in a solution that is 0.0200 M solution in CuNO₃ and 0.450 M HCl(aq) ?
Given: Cu⁺(aq) + 3 Cl^-(aq) $\leftrightarrow$ CuCl₃^2- K_f = 5 * 10⁵.

A) 0.450 M
B) 2.0 *10^-6 M
C) 0.390 M
D) 0.430 M
E) 5 * 10⁵ M