What Ethical Dilemma Was Involved in the Tuskegee Syphilis Study

What ethical dilemma was involved in the Tuskegee Syphilis Study?

A) A group of poor,African-American airmen from WW II was intentionally infected with syphilis in order to study the progress of the disease among minorities.
B) A group of poor,African-American men received the wrong medication for syphilis and were denied entrance to a hospital.
C) Adequate treatment for syphilis was withheld,without notification,from a group of poor,African-American men.
D) Adequate treatment for syphilis was withheld,without notification,from a group of poor,African-American women.
E) People in the community of Tuskegee (women,men,and children) were intentionally infected with syphilis to provide medical internship opportunities for doctors.