You are designing the top-level organizational unit (OU) structure to meet the business and technical requirements. Your design must accommodate the anticipated growth of the company.  Which top-level OU structure should you use?（）

• A、Paris OU, Sydney OU, Los Angeles OU, Lisbon-Barcelona OU  
• B、IT Administration OU, All CohoVineyard Departments OU, All CohoVineyard Offices OU
• C、Sales OU, Purchasing OU, Marketing OU, Accounting OU, Distribution OU, Human Resources OU
• D、CohoVineyard Users OU, CohoVineyard Computers OU, CohoVineyard Servers OU, CohoVineyard Applications OU