A bank has requested proposals for a storage solution to upgrade their disaster recovery processes for their IBM System z， UNIX， and Microsoft Windows environment. The solution must simulate a multi-site environment and provide the customer the ability to evaluate Metro Mirror， Global Mirror， Global Mirror for z/OS， and FlashCopy. 120 TB physical capacity is required per site. Only Fibre Channel drives can be used.  Which solution best meets the specified requirements（）

• A、two DS8700 systems with two-way processor cards and 600 GB FC drives
• B、two DS8700 systems with four-way processor cards and LPAR
• C、two DS8700 systems with two-way processor cards and two frames per system
• D、two DS8700 systems with four-way processor cards and two frames per system