What Was the Purpose of Kassin and Kiechel's (1996)study Using

What was the purpose of Kassin and Kiechel's (1996) study using computers and confederates?

A) to illustrate the use by police of false incriminating evidence
B) to demonstrate the effect of peer pressure in obtaining false confessions
C) to illustrate the use by the police of the "good cop/bad cop" routine
D) to demonstrate that everyday subjects will confess to an undesirable action that they did not commit