Companycom is moving their application to a p5 590 and at the same time moving to a new version of the application. The customer knows only about the resource requirements of the old version. Which of the following is the best method to migrate their application to POWER5?（）

• A、Add CPU and memory COD so they have room to grow if required
• B、Make the server configuration twice as large as the current requirement
• C、Configure the server for the current capacity requirements
• D、Make the server configuration a little larger than the current capacity requirements