A customer with a single IBM System Storage DS8100 reports severe performance problems for some of their applications when a particular data warehousing application creates a heavy load.  What is the most cost effective way to resolve this issue（）

• A、add additional disks to the DS8100
• B、add more cache to the DS8100
• C、move affected volumes to a different disk enclosure
• D、implement TPC for Disk to monitor performance