In the Tuskegee Syphilis Study, the U

In the Tuskegee syphilis study, the U.S. Public Health Service studied the progress of syphilis in African Americans. This study is considered highly unethical by today's standards because the study participants:

A) were evaluated by pseudonurses and other untrained medical professionals
B) were given penicillin, the treatment for syphilis, even if they were allergic to the drug
C) were paid enough to make them unwilling to withdraw from the study even when the medical procedures they were subjected to were painful
D) weren't paid for their time, despite the fact that testing took place over years
E) weren't told they had syphilis and were denied the treatment that would have cured them