An insurance provider maintains a claims database where claims adjusters are adding new claims and updating existing claims everyday. In the evening， a batch process is run to analyze data entered throughout the day. To reduce costs， a shared storage solution is being considered. Which of the following questions should the consultant ask to select the best performing storage configuration that meets their budget requirements？（）
- AWhat database is being used？
- BWhich client operating systems will access the database？
- CWhich vendor’s Fibre Channel switch do they prefer？
- DWhat volume of data is analyzed each evening？