When Discussing Trends in Divorce, Sociologists Focus Primarily on Heterosexual

When discussing trends in divorce, sociologists focus primarily on heterosexual, formally married individuals because

A) the outcomes are different for those who are not legally married.
B) sociologists do not consider nontraditional forms of family.
C) there is limited systematic research on other forms of family.
D) homosexuality is too recent to have been effectively studied.