GKFix MCQ Question

What is the molar solubility of a salt with the formula AB₃ if its Ksp is 27S⁴?

• A. S = (Ksp/3)¹⁄³
• B. S = (Ksp/4)¹⁄⁴
• C. S = (Ksp/9)¹⁄²
• D. S = (Ksp/27)¹⁄⁴