What Is the "Intra-Racial Network Effect

What is the "intra-racial network effect?"

A) It says that there is no difference in STDs across different racial groups.
B) It discusses how health is improved by cross-cultural alliances and relationships.
C) The IRNE is a theory, which says that Hispanics are more likely to have an STD due to their residence in enclaves.
D) It asserts that because of cross-cultural sex partners, STDs are spreading.
E) It suggests that segregation contributes to the high rate of STDs in the black population.