What Is the Concentration of Cd²⁺(aq)in a Mixture of 0 $\times$

Multiple Choice

What is the concentration of Cd²⁺(aq) in a mixture of 0.010 mol Cd(NO₃) ₂ and 1.0 mol NH₃ diluted to 1.00 L? For Cd(NH₃) ₄²⁺, K_f = 1.0 $\times$ 10⁷.

A) 3.2 $\times$ 10^-5 M
B) 1.0 $\times$ 10^-9 M
C) 1.2 $\times$ 10^-9 M
D) 3.2 $\times$ 10^-4 M
E) 1.0 $\times$ 10^-2 M