You have two 50-MByte UFS file systems, one located on a single disk, and the other located on a RAID 1 mirror. Both file systems are full. The RAID 1 mirror uses a round-robin read policy. Statistically, which is true of the RAID 1 mirror when reading data?

A.
The mirror is faster.

B.
The mirror is slower.

C.
Round-robin read policies are not allowed.

D.
The mirror and single disk exhibit the same performance.