A lender uses Claude, with a reasoning section before each answer, to draft credit-limit recommendations that an underwriter approves. Compliance proposes storing the model's reasoning text as the official record explaining why each decision was made. What is the most appropriate response?

Answer: D — Advise that reasoning text isn't a guaranteed account; record inputs, sources, rules, output and the approval

(d) is right: written reasoning helps debugging but isn't guaranteed to reflect how the model actually decided, so the audit trail should capture the inputs, retrieved sources, rules applied, the output and the human approval. (a) and (b) treat reasoning text as faithful, and more of it doesn't change that. (c) overcorrects; reasoning can be kept as a debugging aid under access controls, it just isn't the record of decision.