From 1970 to 1990, Public Disapproval of Homosexual Sex Rose

From 1970 to 1990, public disapproval of homosexual sex rose because

A) people became less accepting of sex outside of marriage in general.
B) people began to view sex as appropriate only for purposes of procreation.
C) homosexuals had become more likely to engage in casual sex, and society still had a very traditional perspective.
D) the incidence of AIDS was higher among gay communities, and society viewed homosexuals as responsible for the disease.
E) better treatments for HIV were developed during this time, alleviating the consequences of contracting the infection.