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 first tray configured?

A.
One 8+1 RAID-5 Group, one 4+1 RAID-5 Group and one hot spare

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

C.
Three 4+1 RAID-3 Groups

D.
Three 4+1 RAID-5 Groups