Which of the Following Is True Regarding Lie Detectors

Multiple Choice

Which of the following is true regarding lie detectors?

A) Lie detectors are accepted as valid evidence in most U.S. courts, but not in other countries.
B) Research suggests that traditional polygraphs are about 78% accurate as lie detectors.
C) Polygraphs are able to detect arousal, but are not valid indicators of lying.
D) Researchers have been unable to identify any potential lie detector replacements for the polygraph.