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？（）

• A、What database is being used？
• B、Which client operating systems will access the database？
• C、Which vendor’s Fibre Channel switch do they prefer？
• D、What volume of data is analyzed each evening？