Answer:
D. SAS.
Explanation:
A serial attached SCSI or SAS is a disk technology that moves data at a high speed from and to a computer disk drive. It uses the SCSI commands and is a serial connection, unlike its predecessor which the parallel bus.
It is used to connect SATA to most SAS controllers. The four versions of SAS are SAS 1, SAS 2, SAS 3 and was 4, and the fourth version has a speed of 22gigabit per second. It components are the initiator, services delivery subsystem, target and expander.
