An auditor is reviewing a bank's implementation of the Current Expected Credit Losses (CECL) model under ASC 326. The bank's model incorporates historical loss data, current economic conditions, and management's reasonable and supportable forecasts. Which audit procedure is MOST critical for assessing the reasonableness of the Allowance for Credit Losses (ACL) calculation?
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A
Verifying that all loans from the general ledger are included in the ACL model's input data.
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B
Testing the mathematical accuracy of the model's calculations from input to output.
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C
Evaluating the reasonableness of management's economic forecasts by comparing them to external, independent economic data.
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D
Reviewing the minutes from the Board of Directors meeting where the CECL accounting policy was approved.