8 × 10⁻⁶ M AgNO₃ solution is gradually added to 1 L of 10⁻⁴ KCl solution. What is the resulting concentration of Ag+ ions?
a) 8 × 10⁻⁶ M
b) 10⁻⁴ M
c) 8 × 10⁻¹⁰ M
d) 10⁻² M