Which of the following postpartal clients is at greatest risk for hemorrhage?

B A gravida 1 para 0 with a history of polycystic ovarian disease D A gravida 4 para 3 with a Caesarean section A A gravida 1 para 1 with an uncomplicated delivery of a 7-pound infant C A gravida 3 para 3 with a history of low-birth weight infants