What Is the Water Solubility of PbI₂ (K_sp = 8

What is the water solubility of PbI₂ (K_sp = 8.4 × 10−⁹) in 0.15 M KI?

A) 3.7 × 10−⁷ M
B) 5.6 × 10−⁷ M
C) 1.9 × 10−⁶ M
D) 1.1 × 10−⁴ M
E) 6.1 × 10−⁴ M