The Difference Between the Situational Interview and the Behavioral Description

The difference between the situational interview and the behavioral description interview is that

A) there is no difference, the terms are synonymous.
B) the situational interview is for technical positions, while the behavioral description interview applies to upper-level management positions.
C) the situational interview is hypothetical, while the behavioral description interview is based upon actual experience.
D) the behavioral description interview is hypothetical, while the situational interview is based upon actual experience.