In Order to Determine Whether the Good-Faith Exception Should Apply

In order to determine whether the good-faith exception should apply in a given situation, the U.S.Supreme Court has stated that courts should pose the question "______."

A) whether the search was constitutional
B) whether a reasonable person would have believed the search illegal
C) whether a reasonably well-trained officer would have known that the search was illegal
D) whether a reasonably trained judge should determine the search illegal