In a Traditional North American Polygamist Marriage, Which of the Following

In a traditional North American polygamist marriage, which of the following wives would hold the highest status in her marriage to Benjamin?

A) 30-year-old Rebekah who had an emergency hysterectomy after delivering her second child with Benjamin
B) 34-year-old Hannah who is the third wife and who is pregnant with her third child with Benjamin
C) 50-year-old Leah who is the first and "legal wife" and who has five grown children with Benjamin
D) 45-year-old Sarah who is the second wife and who had no children with Benjamin