An organizationג€™s automated surveillance system identifies large fluctuations in customer activity. As a result of an

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An organizationג€™s automated surveillance system identifies large fluctuations in customer activity. As a result of an audit, the compliance officer is informed that the system is not generating alerts when activity is consistently abnormal over a long period of time. Currently the organization is evaluating new alert scenarios in an attempt to address this problem.

Which type of scenario is helpful in mitigating this weakness?
A. Peer
B. Income
C. Mapping
D. Below-the-line