Who Is Likely at the Highest Risk for Sexually Transmitted

 Who is likely at the highest risk for sexually transmitted infections? 

A) Russell, a 22 year-old European American heterosexual male who uses condoms
B) Amiee, a 19 year-old African American heterosexual who has multiple sexual partners but takes oral contraceptives for protection
C) Rodrick, a 27 year-old gay African American man who is in a mutually-exclusive relationship and uses condoms
D) Evia, a 28 year-old European American lesbian who uses a dental dam when having oral sex