When Mark Willman and John Snortum Duplicated the Rand and PERF

Multiple Choice

When Mark Willman and John Snortum duplicated the Rand and PERF findings in a study of detective work in 1984, they found that in cases reported to a suburban police department, most cases that were solved when ______.

A) the victim identified the perpetrator in a photo line-up
B) the perpetrator was identified as a "person of interest"
C) the perpetrator confessed
D) the perpetrator was identified at the scene of the crime