SrC2O4(s) -->Sr2+(aq) + C2O42-(aq)
Study the equilibrium equation below. Which substance would more effectively cause the "common ion effect"?

A saturated solution of Naâ‚‚Câ‚‚Oâ‚„ (aq)
A saturated solution of SrCâ‚‚Oâ‚„ (aq)
A saturated solution of Naâ‚‚SOâ‚„ (aq)