Passage: 'RBC introduced a new fraud detection algorithm in January. Fraud cases reported dropped by 22% by June. The algorithm also flagged 5% more legitimate transactions as suspicious.' — What can be inferred?
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A
The algorithm eliminated fraud entirely
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B
The algorithm reduced fraud but introduced some false positives
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C
The 5% flag rate makes the algorithm ineffective
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D
Customers stopped committing fraud due to awareness