Ironically,the Eighth Amendment Has Done Little to Protect Inmates from Staff

Ironically,the Eighth Amendment has done little to protect inmates from staff brutality because:

A) brutality is hard to prove without an adequate number of witnesses.
B) brutality is normally construed as a tort rather than a constitutional issue.
C) acts of brutality are frequently conducted in places where video cameras and other surveillance equipment are not present.
D) inmates are not allowed full constitutional rights in regard to the Eighth Amendment.