What Is the Molar Solubility of Magnesium Carbonate ( MgCO₃

What is the molar solubility of magnesium carbonate ( MgCO₃ ) in water? The solubility- product constant for MgCO₃ is 3.5 × 10^{- 8} at 25°C.

A) 7.0 × 10^{- 8}
B) 1.8 × 10^{- 8}
C) 1.9 × 10^{- 4}
D) 7.46
E) 2.6 × 10^{- 4}