A security analyst performs a vulnerability scan on the local network. Several items are flagged on the report as being critical issues. The security analyst researches each of the vulnerabilities and discovers that one of the critical issues on the report was mitigated in a previous scan.
Which of the following MOST likely happened?
A . A patch was removed
B . A false positive occurred
C . The tool has a high crossover error rate
D . A necessary service was not running
Answer: B