A small company has an IBM System x3105 file server. They are looking for an alternative for tape-based backup and disaster recovery for their 80 GB of data. The backup window is 1 to 2 hours using an incremental， 3-cartridge rotation with off-site storage.  What solution fits best for this purpose？ （）

• A、DLTV4 internal drive
• B、GoVault backup drive
• C、LTO3 library using one drive
• D、LTO3 Autoloader using one 400 GB cartridge