The Molar Solubility of a Saturated Iron(II)carbonate Solution Derived from the K_sp

The molar solubility of a saturated iron(II) carbonate solution derived from the K_sp value is 5.6 x 10⁻⁶ M.The molar solubility is greater than 5.6 x 10⁻⁶ M when accounting for additional reactions.Which of the reactions below will not increase the solubility of iron(II) carbonate?

A) Fe²⁺ (aq) + OH⁻ (aq) $\leftrightarrow$ FeOH⁺ (aq)
B) CO₃²⁻ (aq) + H⁺ (aq) $\leftrightarrow$ HCO₃⁻ (aq)
C) HCO₃⁻ (aq) + H⁺ (aq) $\leftrightarrow$ H₂ CO₃ (aq)
D) H₂CO₃ (aq) $\leftrightarrow$ CO₂ (g) + H₂O (l)
E) FeOH⁺ (aq) + OH⁻ $\leftrightarrow$ Fe(OH) ₂ (s)