You are testing an e-commerce system that sporadically fails to properly manage customers' shopping carts.

You are testing an e-commerce system that sporadically fails to properly manage customers' shopping carts. You have stressed the urgency of this situation to the development manager and development team and they recognize the priority of resolving the underlying defect. The development team is waiting for more information, which you will include in your defect report. Given the following items of information they are included in a typical defect report:

1. The expected results

2. The actual results

3. The urgency and priority to fix this

4. The date and author of the defect report

5. A description of the defect in order to reproduce, including screenshots and database dumps

Which of these items will be MOST useful to the developers to help them identify and remove the defect causing this failure?