Which patient is at the highest risk of developing postpartum depression?

A. A mother with a healthy pregnancy and delivery has a lower risk, though postpartum depression can still occur, it is not as likely as in cases with more risk factors. B. A first-time mother with a supportive partner has protective factors such as a strong support system, reducing the risk of postpartum depression. C. A history of depression and minimal social support are significant risk factors for postpartum depression. Previous mental health issues increase the likelihood of postpartum mood disorders, and lack of support makes coping more difficult. D. A lack of a family history of mental illness does not eliminate the risk of postpartum depression, especially if other risk factors, such as previous depression or limited support, are present.