A customer is running Microsoft Windows 2003, Sun Solaris, and IBM AIX with a total capacity of20 TB. This customer needs high availability for e-business applications. The servers are currently connected to two EMC Symmetrix subsystems that are running RAID 1. The customer wants to consolidate all storage into an IBM System Storage DS8700. How many Fibre Channel drive sets are needed to satisfy the total capacity for this customer?（）

• A、8 drive sets of 300 GB drives
• B、4 drive sets of 300 GB drives
• C、14 drive sets of 146 GB drives
• D、18 drive sets of 146 GB drives