Which of the following statements is wrong for the Taishan200 2280 hard disk Yitong model?

Which of the following statements is wrong for the Taishan200 2280 hard disk Yitong model?
A . Can be added RAID card to improve system data security
B . Have Two models with 12 bays and 24 bays
C . The rear hard disk module can only use the module2 and module 3
D . The CPU connects to the hard disk through the SAS interface

Answer: D