In Real People, Real Disorders, the Case of Andrea Yates

In Real People, Real Disorders, the case of Andrea Yates is presented. She is the mother who drowned her five children while suffering from postpartum psychosis. According to your authors, the risk for postpartum psychosis is higher among women who

A) experience difficult pregnancies and births.
B) have been diagnosed before pregnancy as having schizoaffective disorder.
C) have a preexisting psychological disorder and/or experience a stressful life event.
D) experience a highly stressful life event just before delivery.