Which of the following statements about DS8000 hard drive technology is correct（）
- AAll types of the 2.5" disk drives offered by the DS8800 system have higher performance than the 3.5" disk drives supported by DS8700
- BThe 2.5" disk drives included on the DS8800 support 6Gbps SAS； the 3.5" disk drives in DS8700 are 4 Gbps FC
- CThe 2.5" disk drives included on the DS8800 support 8Gbps SAS； the 3.5" disk drives in DS8700 are 4 Gbps FC
- DThe 2.5" 15k rpm drives offered by the DS8800 system support 6Gbps SAS-2