How Did Society Initially Discover What Was Going on with the Tuskegee

How did society initially discover what was going on with the Tuskegee Syphilis Study

A) Researchers held a public forum to disclose what they had been doing.
B) An internal review board examined the study and declared it unethical.
C) An investigator with the U.S.Public Health Service informed the Associated Press about the study.
D) The subjects involved in the study informed their families, who in turn leaked it to the media.