Calculate the Solubility of Silver Oxalate, Ag₂C₂O₄, in Pure Water

Calculate the solubility of silver oxalate, Ag₂C₂O₄, in pure water. [K_sp(Ag₂C₂O₄) = 1.0 × 10^-11]

A) 1.4 × 10^{-4 M}
B) 8.2 × 10^{-5 M}
C) 5.4 × 10^{-5 M}
D) 3.2 × 10^{-6 M}
E) 2.5 × 10^{-12 M}