Certkiller .com purchased a CX300 with two trays of ATA disks to be used as its primary backup destination device. According to best practices, how is the second tray configured?

A.
Three 4+1 RAID-3 Groups

B.
Three 4+1 RAID-5 Groups

C.
One 8+1 RAID-3 Group, one 4+1 RAID-3 Group and one hot spare

D.
Two 6+1 RAID-5 Groups and one hot spare