A company wants to use VNX Snapshots to create point in time views of their production LUNs. They discover
that they cannot configure the snapshots they need.
What might be causing this issue?

A.
LUNs are classic LUNs

B.
Pool that contains the LUNs is 90% full

C.
Reserved LUN Pool is not configured

D.
LUNs reside on the first four disks of the array