Consider an Aqueous Solution That Contains the Following Ions Each

Consider an aqueous solution that contains the following ions each with a 0.10 M concentration. [Ca²⁺] = 0.10 M [Sr²⁺] = 0.10 M [Ba²⁺] = 0.10 M Which ion(s) will selectively precipitate if 5.0×10 ^{- 5} M sulfate is added?
K _sp(CaSO₄) = 2.4×10 ^{- 5} K _sp(SrSO₄) = 3.2×10 ^{- 7} K _sp(BaSO₄) = 1.1×10 ^{- 10}

A) Ca²⁺ only
B) Ca²⁺ and Sr²⁺
C) Sr²⁺ and Ba²⁺
D) Ba²⁺ only
E) All of these will precipitate