Based on the solubility product constants given below, which salt is the least soluble?
Sn(OH)₂, Ksp = 5.45 × 10(-27)
Mg(OH)₂, Ksp = 2.06 × 10(-13)
Pb₃(AsO₄)₂, Ksp = ____
A. 5.45 × 10(-27)
B. 2.06 × 10(-13)
C. Varies
D. Not determined