A customer recently installed new a SAN with an IBM System Storage DS8700 and several open systems servers to address a need for storage consolidation and still provide good response time. They have asked the Business Partner technical representative for the most complete IBM product that would allow them to do performance reporting of the new SAN environment.  What is the best solution（）

• A、Tivoli Storage Manager
• B、Tivoli Storage Productivity Center for Disk
• C、Tivoli Storage Productivity Center Basic Edition
• D、Tivoli Storage Productivity Center Standard Edition