Which of the following statements is true about BAC?
a. The positive buzz from alcohol doesn't usually occur below a .06 BAC.
b. Increased drinking above a .06 BAC can result in fatigue, slower breathing, reduced coordination, and a general "down feeling".
c. A BAC above a .10 has many side effects, but it also increases the stimulant effect of alcohol.
d. BAC can be significantly reduced by vigorous exercise.