Let the solubilities of AgCl in $H_2O$, 0.01 M $CaCl_2$, 0.01 M NaCl and 0.05 M $AgNO_3$ be $S_1, S_2, S_3 and S_4$ respectively. What is the correct relationship between these quantities?

Question

(a) $S_1 > S_2 > S_3 > S_4$

(b) $S_1 > S_2 = S_3 > S_4$

(c) $S_1 > S_3 > S_2 > S_4$

(d) $S_4 > S_2 > S_3 > S_1$