ABC a 1,3 2,2 3,1 B 3,1 1,3 2,2 y 2,2 3,1 1,3 For each of its marriage matchings, indicate whether it is stable or not. For the unstable matchings, specify a blocking pair. For the stable matchings, indicate whether they are man- optimal, woman-optimal, or neither. (Assume that the Greek and Roman letters denote the men and women, respectively.)