Review of a Claude-generated payment module finds three problems: retries re-send requests that already succeeded, the idempotency key the retry logic relies on is regenerated on every attempt, and the error logger records the wrong attempt number because of how retries are counted. How should you send these back?

Answer: D — Describe all three in one detailed message, explaining how they affect each other

All three problems involve the retry logic, so a fix to one changes the others. Interacting issues should go in one detailed message so they're resolved together and consistently. (A) and (B) suit independent issues, and here each separate fix risks undoing another. (C) throws away the specific findings.