What is a critical performance and availability consideration when configuring RAID groups on a VNX array?

A.
Large RAID 5 groups have increased risk to availability and higher I/O throughput

B.
Large RAID 5 groups have decreased risk to availability and lower I/O throughput

C.
Small RAID 5 groups have increased risk to availability and lower I/O throughput

D.
Small RAID 5 groups have decreased risk to availability and higher I/O throughput