Which of the Following Events Did NOT Occur in the Tuskegee

Which of the following events did NOT occur in the Tuskegee Study?

A) Researchers told participants they were receiving treatment even though they were not.
B) Participants in the study were given/infected with the disease.
C) Participants were not told they had been infected with the disease.
D) Researchers prevented participants from seeking treatment.
E) All of the above occurred in the study.