A large retailer wants to consolidate tape libraries. They currently have a Quantum library for theirUNIX platforms, and an STK library for their System z. They have a total of 12 drives in the twolibraries. Which IBM solution would be the most cost effective and satisfy the requirement?（）

• A、Virtual Tape Server 
• B、IBM TS3584 with TS1130 drives 
• C、IBM TS3310 with 12 LTO-5 drives 
• D、IBM TS3400 with either LTO-5 or TS1130 drives installed