It can be reliably concluded from the results of the study cited above that A. the lie detector gives accurate results only when employed by a trained examiner using approved questioning techniques B. with a trained examiner using approved questioning techniques, the lie detector gave incorrect results in at least one out of ten instances C. in at least 70 percent of the cases, a trained examiner using approved questioning techniques can discriminate between the questions for which the lie detector gives correct results and those for which it does not D. the lie detector measures truth-telling objectively, and the validity of its use does not depend on subjective interpretation on the part of the examiner E. if a trained examiner using approved questioning techniques asks a specific question and the lie detector indicates that the answer was false, the respondent definitely lied when giving that answer