Sodium Chloride Is Added Slowly to a Solution That Is $\times$

Sodium chloride is added slowly to a solution that is 0.010 M in Cu⁺,Ag⁺,and Au⁺.The K_sp values for the chloride salts are 1.9 $\times$ 10^-7,1.6 $\times$ 10^-10,and 2.0 $\times$ 10^-13,respectively.Which compound will precipitate first?

A) CuCl
B) AgCl
C) AuCl
D) All will precipitate at the same time.
E) Cannot be determined.