Which of the Following Events Was Instrumental in the Move

Which of the following events was instrumental in the move toward the community corrections movement in the United States?

A) The inmate riot that occurred in September 1971 at the Attica State Prison in New York
B) Research findings in the 1980s that indicated that only 5% of state correctional budgets were allocated for rehabilitation
C) Research findings in the 1950s that disputed the use of medicine and science to treat the offender's behavior
D) The advancements in the field of social work that had been achieved by the 1960s