All of the Following Are True Concerning Polygraphs EXCEPT

Multiple Choice

All of the following are true concerning polygraphs EXCEPT:

A) polygraphs are more complicated than voice stress analyzers.
B) polygraphs rarely detect psychopathic liars.
C) individuals who pass polygraph tests are probably innocent.
D) investigators must inform suspects that they do not have to take a polygraph.
E) failure to pass a polygraph test implies certain guilt.