Violation
Which of the following are true regarding barbiturates? a. Significantly elevates pain thresholds b. Are metabolized by the liver c. Are classified according to duration of action d. Depress all levels of the CNS e. Cause death by cardiovascular depression
(b), (c) and (d)
(a) and (d)
(a), (b) and (c)
(b) and (e)
(c), (d) and (e)