Multiple Partner Fertility, According to the Opening Vignette in Chapter

Multiple partner fertility, according to the opening vignette in Chapter 9, refers to:

A) new mothers, but not fathers, reporting higher levels of social integration compared to their childless counterparts
B) new parents having greater self-esteem than those without children
C) men and women having children by two or more partners
D) fathers, but not mothers, reporting greater self-esteem than do those without children
E) the rise in families who have three or more children