PREDICT → COMPARE → REPAIR → TRANSFER

Investigate a misleading clue

Choose the most effective prompt for these specific constraints. There is no universally best wording.

THE TASK

After a styling change, checkout sometimes creates two orders. A teammate suspects CSS. You have a reproduction: double-click Submit while the request is pending.

cglearn scenario · Nothing is executed · Version 2026-09-09.1

Which prompt best fits the task?Prompt AReproduce the double-click failure, inspect submit and request handling, and test the CSS hypothesis against evidence. Fix the cause narrowly; verify one order is created during a pending request and normal checkout still works.Prompt BRevert the styling commit and run the checkout suite. If tests pass, report that duplicate orders are fixed.Prompt CDisable the button for two seconds after a click and add a test for that delay. Preserve the current checkout layout.Prompt DInvestigate checkout from frontend to database, replace the payment client with a more reliable implementation, and run the full test suite.